Scarpa 4-Quattro SL: A First Look

by Jason Albert
written by Jason Albert
Scarpa 4-Quattro SL

Fresh out of the box, a Scarpa 4-Quattro SL. The boot (size 27) weighs 1420g.

The Scarpa 4-Quattro SL promises and delivers legit stiffness. The sole is GripWalk compatible for the 50/50 skiers out there. Don’t be fooled by the 50/50 … it could go 100/0. Here’s a first look.

 

I’ll make some assumptions here: the 4-Quattro refers to the four-buckle system and the four boots that comprise the 4-Quattro line: two models for women, two for men. Lots of fours.

Four magnesium buckles help stiffen the ride. And just to ensure the foot retention is solid, a freeride-worthy powerstrap up top keeps the SL legit stiff. Scarpa calls the 4-Quattro SL a 120 flex, 10 less on the flex scale than the slightly heavier and stiffer Quattro XT. For women, the XT is a 115 flex, and the SL a 100. I know women charging way harder than me, so if you want the 130 or 120 flex, try the men’s options.

The plans for the 4-Quattro SL are as follows: the pair arrived in Bend several weeks ago. I took them out for a few laps up the local lift-served volcano (still shut down for the off-season) for this first look and then handed them off in Seattle to Rob Copollillo for the full review.

 

Uphill First Impressions

I’m usually not a four-buckle boot skier, but after a few tours in the 4-Quattro SL, I’m angling for a pair of four buckle boots for keeps and hid my disappointment when handing the boots to Rob. I did say something like, “if the boots don’t fit right, let me know….”

Scarpa 4-Quattro SL on the ups.

The buckles are loosened for the uphill. The boot sports a just-enough 61 degrees of articulation.

Scarpa 4-Quattro lock mechanism.

The lock mechanism is a simple vertically oriented throw.

The stated range of motion on this boot is 61 degrees. I know; maybe it was 60.6 — why not round up? No matter, the boot passes the tourabilty test, and I’d say for most skiers focusing more on the down than the up, you’ll be pleasantly surprised at how forgiving the boot is while ascending. To the shock of some readers, I did deploy the hi-risers on several occasions while skinning. So it goes with a beefier boot and a more limited ROM.

The lockout mechanism is simple, vertically oriented, and reliable in my limited use.

I was very pleasantly surprised while skinning. I expected meh; I got stoke—the boot over-delivered.

First Impressions on the Downhill

I can say nothing more than the 4-Quattro SL skis like a champ. We were just transitioning here from rock skis to less battered boards — I had the G3 FINDR 86 underfoot. The ski is a reliable, stable, and predictable plank (which I love), and with the Scarpa boot helping initiate the turns, the chunder and chop and breakable were way more tolerable. Some more hardcore skiers than I will opt for the XT version with the stiffer 130 flex. The SL’s 120 flex rating felt plenty stiff and progressive, and it’s as close as I’ve come to my old Lange XLRs back when the Mahre brothers ruled the race scene. Stiffer boots can make the downs more fun. Such was the case with this boot. Thank you four buckles, overlap shell, and powerstrap.

 

The Fit

The fit might be finicky for some. The instep and toe box appear to have lower volume. The toe box, for my feet, felt fine, as did the instep, but I can see it being trouble for those with higher insteps. If you are used to the venerable Scarpa Meastrale series, you’ll note the trimmed-down appearance of the 4-Quattro line of boots.

I’m a solid 27.5, and the 4-Quattros break on the 1/2 size. The 26.5 and 27 share the same shell but have a 26.5 or 27 lasted liner, respectively. The 27.0 fit fine; I would want maybe 1.5mm more room up front for the big toe on the left foot (it’s a bit longer than the right foot).

Intuition liner: Scarpa 4-Quattro SL

As usual, Scarpa outfits the boot with a heat-moldable Intuition liner which is beefed up to be a solid match for the four buckle + powerstrap retention system.

Scarpa 4-Quattro SL

Note the lower volume instep. For those used to the Maestrale fit, size before you buy.

Read a WildSnow Maestrale review.

 

Final Thoughts for the First Look

The boot has been plugged pretty hard by Scarpa. The 4-Quattro line is GripWalk compatible, meaning the boots work with both tech bindings, GripWalk-certified alpine bindings, and MNC bindings like the Salomon Shift. For you 50/50 (on-piste/off-piste) skiers out there, a 4-Quattro could meet all your needs. And honestly, if it fits, and you are an all-the-time human-powered skier, the 4-Quattro ST could be a daily driver for those desiring burly stiffness and sufficient tourability. Don’t be fooled by the 50/50 … it could go 100/0.

The 4-Quattro SL Specs

Size tested: 27
Last (claimed): 100mm in the 27
Weight Verified: 1432g (a bit lighter than a 27.5 Fischer Transalp Pro) and a few paper clips lighter than a Scarpa Maestrale.
Shell/Cuff Material: Pebax R-New® Shell with an over-injected Carbon Grilamid® LFT insert
Sole: Presa Ski-01/GripWalk Tour
Liner: Intuition/heat moldable
ROM: 61 degrees
Flex rating (claimed): 120
Forward Lean: 17 +/-2
Price: The SL is $699, and the XTs cost $799.

Shop for the 4-Quattro SL.

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ZipFit GFT Touring Liner Review

by Gavin Hess
written by Gavin Hess
ZipFit GFT Touring Liner 1

ZipFit’s GFT Touring Liner: Between the durability, better-than-expected walking performance, excellent downhill performance, and truly unparalleled fit and comfort, the GFT has many attributes worth a second glance.

Sometimes the quest for better comfort, more control, and good fit leads down the path of ski boot liners. ZipFit enters the touring boot liner game with a superb, durable, yet heavy and pricey aftermarket liner. Squirrel away the money you might otherwise spend on those triple-espressos.

 

Primer on Aftermarket Liners

Throughout the ski world, aftermarket liners seem to be a controversial subject. Some boot manufacturers annually claim that their in-house liners are so good that they don’t need replacing, and others (see Scarpa) use aftermarket Intuition liners standard in their boots. Anecdotally, most backcountry skiers in my orbit seem to be using some flavor of Intuitions in their boots, with some replacing liners more than once a season. This brings us to the crux of all-foam boot liners; packing out. The real liner beatdown occurs when touring uphill; the walking motion leads to significant wear and compression of the liner’s foam. While redoing the heat molding process can rejuvenate the foam and get more life out of a liner, they eventually pack out, get holes or abrasions from rubbing inside a shell, and end up in the trash.

ZipFit Primer

Enter ZipFit – I had heard about ZipFit from friends that are dedicated resort skiers. While our gear preferences are generally completely incompatible, it piqued my interest to hear time and time again about great experiences with ZipFit alpine liners. Combine that with catching wind of a new touring liner, I had to get my hands on a pair.

Before this past winter, I had heard of ZipFit, but frankly had no idea what made them special or different from any other aftermarket liner. I imagine I’m not alone in my lack of knowledge on this subject, as they really haven’t been relevant to the touring market until this past winter.

Perhaps the biggest differentiator of a ZipFit is the materials used – there is no foam in these liners. They use microfiber, leather, and neoprene – then fill the liner with cork composite called OMFit. ZipFit claims their liners will last 300-500 days on snow, and I’ve heard stories of folks getting close to 1000 days from their ZipFit alpine liners. While I’m interested to see how that translates to a touring liner that suffers wear and tear from walking and rubbing, I expect a significantly longer lifespan than an Intuition or similar foam liner.

In addition to the durability aspect, there are a few other claimed benefits to ZipFit’s liners. First, the OMFit cork is held in four bladders from which one can add and remove the cork – this means one can finely adjust the volume in the Achilles, ankle, instep, and shin areas all independently. This adjustability allows people like me – with skinny ankles and heels – to secure my heels as I’ve never experienced in other liners. The forefoot area is constructed from lined neoprene that is thin and stretchy to give your forefoot space to stay warm and accommodate any bunions or sensitive spots.

ZipFit GFT – Touring Liner

Let’s get this out front: the GFT liner is heavy and $$!!. ZipFit did not compromise on materials or construction techniques relative to the alpine liners, which are also heavy. Here is how the weight compares to the other liners in my possession (All 28/28.5, no footbeds included, no cork added to ZipFit):

Liner Weights
GFT: 577g
Intuition Pro Tour MV: 271g
2021 Tecnica Zero G Tour Pro stock liner: 236g
Price: $475

As you can see, this might not be the liner for the most weight-conscious sector of WildSnow’s readership, which I have, at times, strongly identified with. Cork and leather are simply denser and more robust than the foam used in standard liners, and there is no way around this.

I have been comparing the Dynafit Hoji/Radical line of boots and the Tecnica Zero G + GFT liner (this is theoretical/based on research/reading as I haven’t skied the Dynafit boot). The Hoji line comes in quite a bit heavier than the Zero G (w/ stock liner), but is widely regarded for having a much lower friction range of motion.

ZipFit’s how-to: adding cork.
ZipFit’s how to: removing cork.

 

ZipFit GFT Touring Liner 2

Perhaps the biggest differentiator of a ZipFit is the materials used – there is no foam in these liners. They use microfiber, leather, and neoprene – then fill the liner with cork composite called OMFit.

Assuming the boots’ ski performance is similar, the gut instinct to prioritize weight is questioned – what really matters here is the energy expended to move uphill. All this is to say the GFT, while heavier than the competition, walks about as well as the Intuition Pro Tour, and leagues better than the Tour Wrap. The nature of these beasts, the ZipFit GFT, is that the liner has a robust structure where desired but has thin and flexible zones where necessary to facilitate a pleasant and low resistance walking experience.

Beyond the flexibility, I appreciate the fit and heel hold of the GFT on the uphill as well. With my skinny heels, a 100-day-old intuition is often a mess of heel slop and hotspots during a lengthy spring tour. The combination of near-perfect heel hold and the stretchy forefoot of the ZipFit made for happy feet on hot spring days when swollen feet and hot spots have often had me counting down the minutes until I could get out of my boots at the end of a tour.

ZipFit GFT Tour Downhill Performance

Beyond fit, improved downhill performance is billed as a headline benefit of ZipFits. I’ll preface this by saying that I haven’t skied a proper alpine boot in my adult life, and the Tecnica Zero G was already a fairly groundbreaking performance upgrade in my world. Lately, though, I’ve been getting greedy – skiing bigger skis, maybe a bit faster (faster but by no means fast), and asking for a bit more suspension and stability from my boots.

The GFT liner is the solution I didn’t know I needed on this front. I got some late-season groomer days with the liners here in Jackson and was blown away by what I would describe as the liveliness these added to my boots and skiing. It was an awesome feeling of subtle rebound coming out of a turn and damping in inconsistent snow that had me skiing more confidently and aggressively on some variable early morning spring groomers that often have me a bit hesitant. A few times, the thought crossed my mind: “this must be what skiing a real alpine boot feels like….” I still can’t claim that for sure, but I have to believe I’m a few steps closer with the GFT in my Zero G boots.

In the backcountry, I found a similar appreciation for the liveliness and damping while skiing high-speed corn, as well as during some high consequence and scratchy jump turns where the added suspension helped me maintain a more forward, balanced stance in more 3-D conditions that tend to throw me off balance or backseat. In general, though, the downhill performance benefits of the GFT liner were subtle in high-quality, backcountry snow conditions – this to say, I’m not always convinced that stiff or high-performance boots matter much in these conditions.

Who would I recommend these liners to?

Let’s be clear; a $475, 577g touring liner isn’t for everyone. I believe the ZipFits will have a place in many folks’ lives as they solve a few important issues. First, I’m confident in recommending these as a solution for those constantly struggling with heel hold. The heel hold is off the charts good and should stay that way throughout the (long) life of the liner. Despite my skinny heels/Achilles area, I haven’t added any cork to mine, and they have the best heel hold I’ve experienced.

Second, guides and other heavy users – I have about 30 days on the liners pictured, and they are showing essentially zero signs of wear and tear. As discussed, the durability is truly off the charts – I’m excited to report back after a full season of use. It seems crazy financially and waste-wise to go through two pairs of intuitions each season – but for many, maintaining good fit and performance feels worth it. The GFT liner could be a good solution for some of these users.

Last, the GFT liner could be a great solution for a higher performance, one boot quiver. For all the reasons that a one-boot quiver is appealing to many skiers (perhaps excluding cost savings), the GFT can add performance to a lighter touring boot for resort use while walking really well for touring. Whether for travel, saving space in a small living area, or simplifying life, the GFT will strike a nice balance for some skiers and their one-boot quiver needs.

ZipFit GFT Touring Liner 3

I have about 30 days on the liners pictured, and they are showing essentially zero signs of wear and tear. The durability is truly off the charts.

ZipFit GFT Touring Liner 4

The GFT could be a great solution for a higher performance, one boot quiver. For all the reasons that a one-boot quiver is appealing to many skiers (perhaps excluding cost savings), the GFT can add performance to a lighter touring boot for resort use while walking really well for touring.

A few other thoughts

A unique aspect of the GFT liners and ZipFits, in general, is how they recommend donning/doffing the liner/ boot shell. The recommendation is to put on and lace up the liner first, then put your foot in the boot. This better preserves the heel/Achilles cup as sliding one’s heel into the liner while it’s in the shell displaces the cork and can negatively impact the nice, snug Achilles area. This method worked quite well with the Tecnica Zero G, and maybe made the on/off process easier than with a standard tongue liner living in the boot. I tried the liner a few days with the Alien RS, and it was a bit of a nightmare. Between the gaiter and BOA cables, it took a few tries to thread the needle without catching or snagging, and I often felt like I was going to break something.

At about the same time as getting the GFT, I also invested in a stack-style forced air/heat boot dryer. This purchase was a long time coming for me, but the few days I forgot to put the liners on the dryer reinforced my investment. The merino/Thinsulate/neoprene lower needed the extra oomph of the forced air/heat to fully dry on back-to-back wet/sweaty ski tours.

Speaking of the merino/Thinsulate insulation, I didn’t get the chance to put these liners through the full range of frigid Wyoming temps. I had a few chilly spring mornings in the low teens to single digits to see how the GFT liners fared warmth-wise. I would put them solidly between the stock liners and my MV Intuition Pro Tours – maybe not my top choice for an uber cold expedition, but good enough for my daily use in the often frigid Tetons. I’ll update this as I get more data points throughout the coming winter, but the main takeaway should be that they are a bit warmer than the stock Zero G liner, but can’t compete with the gold standard of dense, warm Intuition foam.

During my fitting session at Nomad Sports in Teton Village, I learned that ZipFit has a free trial/return period where one can have the liners molded and try them for five ski days before making a final decision. At Nomad, they had never had a customer come back unsatisfied after the trial period, but it’s nice to know that option exists when laying down the cash for such an expensive liner.

ZipFit GFT Conclusions

I’m sure I wasn’t alone when I first dismissed the ZipFit GFT liner upon seeing its weight. While the weight and price will dissuade many, hopefully, this review can shed some light on the utility of such a liner. Between the durability, better-than-expected walking performance, excellent downhill performance, and truly unparalleled fit and comfort, the GFT has many attributes worth a second glance. If there were a way to build some or all of these features into a weight-competitive liner oriented toward the 1000g boot class, I would be the first in line. As it stands, I plan to continue to use the GFT’s in my Tecnica Zero G boots for guiding days, and most of my winter day-to-day touring. I’ll probably keep a pair of Intuitions around for the fast-moving and big days where I prioritize weight. That being said, at some point, it seems necessary to ski the GFT (Grand F***kin Teton) in the GFT liners.

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Tecnica Zero G Peak Carbon Ski Boot Review: One Last Look

by Ben Hoiness
written by Ben Hoiness

Shop the Zero G Peak Carbon and the Zero G Peak Carbon – Women’s.

Technica, known for its success with the four-buckle descent-oriented Zero G Pro Tour boot, brings the Zero G Peak Carbon to market in the 1000-g class. Here’s a WildSnow look at the ZG Peak Carbon .

Ben Hoiness on the Zero G Peak Carbon

Ben Hoiness, the author and Zero G Peak Carbon fan, enjoys Cooke City’s winter light. Photo: Leslie Hittmeier.

All new Tecnica Zero G Peak ski boot.

Tecnica makes a big splash in the 1kg class of ski boots with the new Zero G Peak Carbon. This is a lovely looking boot for demanding skiers.

Size tested: 26.5
Stated Weight: 990 Grams. (Actual weight 1,013 demo version)
ROM: 75-degrees
Materials: Carbon cuff, carbon-infused grilamid lower.
Sole: Vibram
Forward Lean: 13-degrees, bumps to 15-degrees by adding a spoiler.
MSRP:$949.95

Read the Zero G Peak Carbon First Look

After spending a big Montana spring skiing this boot, I’m psyched to get this review out into the world. I’ve spent a good amount of time touring, scrambling, climbing ice, and boot packing in the Zero-G Peak; here’s my honest opinion on how this boot suited my mountain travel.

A little background on my daily skiing set-ups and terrain: I primarily ski a Zero G Tour Pro in a 25.5 (4 buckle big boot) and a Scarpa F1LT in a 26 (the 1 kg little boot). I typically ski my big boots on days when I’m more focused on the skiing or if I’m less concerned about speed on the ascent. I ski the Zero G Pro with three different skis, the 4FRNT Renegade122, MSP 107, and MSP99. As for my lighter boots, I tend to ski these on bigger days (8-12k vert) or when speed on the ascent is paramount. I also prefer to ski a little boot in terrain where I am mainly hop turning as I find it easier to maneuver the ski with a lightweight boot. I ski the 4FRNT Hoji112, Raven104, and MSP99 with this boot. I live in Cooke city in the winter and my terrain varies from low-angle tree skiing to steep peak skiing when conditions allow. — From Ben’s first look.

 

ZERO G Peak Carbon Z-cable Closure

First off, there are some significant differences in the design that I have outlined in a few photos below that I think are a major driving force in the improved skiability of the Zero G Peak Carbon over its competitors. The first is the closure. The closure on the Peak Carbon utilizes what Tecnica calls it a “Wrapping Shell Construction.” This construction is borrowed from more downhill-oriented boots and is employed to lock your foot into place by overlapping the shell with a single lower buckle tightening a Z-cable over the fore and midfoot. In my experience, this closure feels and skis much more secure than the BOA systems utilized on other boots in this class. Other makes using BOA-like closures are the Scarpa F1LT, the Dynafit TLT X, the Salomon S/LAB MTN Summit, and the Fischer Travers CS.

The F1LT BOA closure v the Peak's Z-cable closure.

The Scarpa F1LT (left) employs a BOA closure, whereas the Peak Carbon uses a Z-cable system to snug the lower foot and secure the ankle/heel in place. The Peak’s shell also wraps further up on the forefoot.

Peak buckle closure.

The lower buckle on the Peak Carbon is recessed nicely and firmly snugs up the Z-cable for a solid fit.

The second noticeable difference in the Peak Carbon is the shell construction, or rather the shape of the shell. The shape of the Peak Carbon’s shell varies from Scarpa’s LT and RS Lambda frame in one seemingly important spot — see photos.

I believe the construction of the Peak Carbon shell allows for more torsional flex and minimizes slop compared to the Lambda. In the photo, the Peak’s shell wraps further up and around the sides of the foot, relative to the Scarpa F1LT. Lastly, the cuff closure of the Peak Carbon is simple, solid, and reliable. It utilizes a single upper buckle (same buckle as the lower) and a power strap with a camming buckle and G hook. This is a big improvement over the velcro cuff closure of its competitors.

Zero G Peak Carbon side profile 1 outer shell.

In this side profile, we see the outer shell of the F1LT and Peak. The Peak Carbon provides more shell material near the outer ankle to provide excellent lateral stability.

Zero G Peak side view to show how shell material provides great lateral stability.

In this side profile, we see the inner shell of the F1LT and Peak Carbon. The Peak Carbon provides more shell material near inner ankle too. This too provides excellent lateral stability.

The last piece of design I want to talk about is the ski/walk lock mechanism; this design element gives me the most pause. The design is similar to the larger, stiffer cousin to the Peak Carbon, the Zero G Pro Tour, but the lockout mechanism significantly slimmed down on the Peak. The mechanism does a fantastic job locking the boot forward and backward; my main concern is its durability. When in walk mode, the spring-loaded throw protrudes more than its competitors and maybe more prominently than on any other touring boot I’ve used. So far, I have been happy to say the mech has held up great, but I will continue to monitor this in the long run.

Foreground Zero G Peak Carbon walk mechanism.

The Peak Carbon’s walk mechanism protrudes from the boot’s rear when flipped up into walk mode. This might be something to keep your eye on when booting and climbing.

 

Peak Carbon Downhill Performance

The downhill, this is what it’s all about anyway, right? Most of us agree that boots in the 1,000-gram weight class will walk pretty darn well, and the Peak Carbon is no exception here. I’ll dig into the nuances of walking, but first, let’s hone in on skiing. The biggest difference here compared to other boots is the predictability of the boot in adverse conditions. When skiing a light boot, I find it most challenging when I’m bouncing through chop, skiing a fast out track, or anytime the boot needs to flex through snow that isn’t uniform in density or shape. The Peak has a slightly softer flex than the Scarpa F1LT, but the flex is much more progressive, allowing for more predictability through the turn.

Peak Carbon Conclusions

Most of our time in a 1kg boot is in walk mode, and as I stated above, most boots in this class walk quite well, and the Peak is no exception to that general rule. The Peak Carbon has plenty of ROM for long strides across the flats. It climbs well and feels stable on small edges and steep ice bulges. The boot breathes well for high output ascents and has been warm enough for colder days. I’ve worn the boot in temperatures of 5F-45F, and although I haven’t tested this boot in sub-O-degree F conditions, It has been warmer than the F1LT when compared side by side.

Overall, If you can’t tell, I have been psyched on this boot on everything from the durability to the downhill performance. I’m excited about the first boot in this class from Tecnica and look forward to any incremental improvements.

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Gear Guide: Lightweight Backcountry Ski Boots 22/23

by The Editors Of Wildsnow
written by The Editors Of Wildsnow

In the past few years, the 1000g class of touring boots, what we’ll refer to as the “lightweight” class has expanded. Gone are the days of foot-binding type pain and an accompanying too stiff or too soft boot. While not going overboard on the mass of a particular ski, you can find your bliss on the ups and downs. When they fit properly, these lightweight boots should feel more like slippers.

 

2022/2023 TLT X

The TLT Xs are the newest version in the Dynafit TLT family.

Dynafit TLT X

The TLT X from Dynafit offers the wide, high-volume feet a home and a chance to float uphill in a 1000-gram boot. The latest variation of the Tourlite Tech consolidates the best-of design features of previous models while removing some less popular features. All of these upgrades result in a boot that is easy to walk in and easy to ski and should be considered on any skier’s short list of touring boots for the upcoming season.

If it must be talked about here, the TLT X employs the same “clever” use of Roman numerals that Apple used when it launched the iPhone 10. Like Apple, Dynafit skipped the 9 in its long and tumultuous iterations of TLT boots released over the last three decades. Notably, the X surrenders the last vestigial Speed Nose Toe originally designed to move the pivot point of the tech fit back ever so slightly for a Dynafit-declared more natural stride. The speed nose remained an uphill battle (excuse the obvious pun, but they started it by calling it the TLT X) as it limited crampon use, binding compatibility and frankly just looked weird when on the shelf with other less innovative boots.

A TLT Progression

From right to left: Dynafit TLT X, 8, and 5. In the TLT X, the fit is more generous to accommodate more foot types ands they are verified comfy for long haul tours.

Fit Tips

The TLT X feels wider than the advertised 101mm last and has ample vertical toe room. The vertical space is great for circulation for those with cold feet, but a skier who likes the reassuring firm handshake of constant pressure throughout the forefoot may not like the extra room. The liner is an upgrade from anything we have seen in previous TLTs and takes a solid heat mold. However, it is thin to save weight, so don’t expect miracles in volume expansion. Lastly, the shell is significantly easier to work on than other lightweight boots that have extra carbon in the cuff. Shell customization shouldn’t be a problem for an experienced bootfitter used to working with lighter touring boots and shell materials with lower melting points.

How it Skis

The TLT X performs admirably in steep firm snow testing and mellow powder meadow skipping. It was so consistent between turns that analyzing its turning ability was almost an afterthought to enjoying the movement itself. The forward flex of the boot is soft, so skiers that need raw power should be warned. However, its lateral and torsional stiffness are solid, as long as you keep your ski pairing below 95 mm in the waist.

The TLT X in hauling mode.

The TLT X is a long haul master with improved comfort and enough stiffness to make turns with a heavy load. Photo: Brian Parker.

How it Tours

Although abandoning the speed nose will likely be a good move, Dynafit held onto its less notorious and far more appreciated one buckle throw between walk and ski mode. Unlike the Hoji Pro Tour turned Dynafit Radical Pro, the power strap is not integrated into the buckle. On shorter ascents, you can leave the strap cinched with a slight decrease in range of motion. For longer approaches, this strap must be loosened manually to obtain an optimal range when striding uphill. Further down the cuff lies the new Ultra Lock 5.0 buckle/strap hybrid. Its quick-release system lets you set it at the correct tightness and easily remove the boot without messing with your settings. This buckle is fully integrated into your tour mode for fiddle-free transitioning. Ascending is clearly the number one goal of this boot, so find a skin track with perfect angular kick turns and enjoy the ride.

Gripes

The new Twist Lock Closure system is both a huge fit advantage of the boot and a possible red flag. Unlike a traditional Boa system, Dynafit uses a plastic molded plate that sits under the shell. As you turn the dial, a thin cable tightens, allowing the plate to hold your foot in place. Most times, the plate sits on a sweet spot between your ankle and forefoot. On a few rare occasions, the plate sits askew and feels suboptimal. Turn the knob slowly when tightening, and this should alleviate potential issues. This adds a new system to the boot with some adjusting to get it in the right place. Lastly, make sure the cable runs through the plastic tab/guide on the plate, before inserting the liner. It’s easy to ensure the cable runs properly, but keep an eye on it.

Closing Thoughts

We are confident that the TLT X is the best TLT boot yet (or at least since the masterpiece of the TLT6). Dynafit has done a wonderful job paring down their features; this is a sleek, easy to operate boot at the impressive weight of just over 1000 grams. If you have a wider foot and don’t need as stiff as a brick flex, find a pair before they are gone

Size tested: 27.0/27.5
Verified Weight: 1118g/boot
Women’s Specific Model: Yes, TLT X W
ROM: ~60-degrees
Materials: Upper Grilamid/fiberglass, lower is Grilamid.
Last: 101mm with a wider forefoot.
Forward Lean: ~15-18 degrees
MSRP: $799.95

Shop for the TLT X.

All new Tecnica Zero G Peak ski boot.

Tecnica makes a big splash in the 1kg class of ski boots with the new Zero G Peak. This is a lovely looking boot for demanding skiers.

Tecnica Peak Zero G Carbon

Among the cognoscenti of light and fast, there’s a sub-group of practitioners bullish, even exuberant, on Tecnica’s Zero G Tour Pro: it helped reestablish downhill supremacy (it’s a four buckle + power strap overlap construction, with an acceptable range of motion on the ups). For those bearish on hauling anything creeping beyond, say, 1150g of boot up a skin track, the weight from Technica for a 1kg class boot was a long way. With the arrival of Tecnica’s Zero G Peak Carbon, exhale that sigh of relief, snuff out the Nag champa incense; the boot has arrived.

With a carbon cuff, a carbon-infused grilamid lower, coupled with a Z-cable buckle, upper buckle and cam-lock operated powerstrap, this tasty morsel from Italy will snug around your foot. This boot has a near-perfect combination of torsional rigidity, progressive flex, and frictionless range of motion to warrant holy grail status. It provides excellent power transfer and that feel of airiness when notching 10k days or even “Denaling” in the backcountry. Ensure the boot fits; at this point, there are many all-hail models in the 1kg class.

Fit Tips

We’re not sure where all the foot models for ski boots originate, but let’s say there’s generally some foot size/shape diversity. With its 99mm last, the Zero G Peak Carbon should work for “average” feet, meaning those not needing massive arch support and reduced instep volume.

Our WildSnow tester in Montana, known to drive heavier spec’d skis in the 1800g and above range, found the lightweight liner well constructed and on par with similar liners in the class. Still, he’d prefer an Intuition Power Wrap liner to add even more “oomph” to the shell-liner pairing. Forward lean is adjusted with the addition of a velcro spoiler, which can eat up some volume for the skinny calved out there too. There’s ample room for the toes, but the toe box feels a bit more traditional (in its lack of width) than the new TLT X and S/Lab MTN Summit. Again, fit matters; make sure it works for you.

Ben Hoiness on the Zero G Peak

Ben Hoiness, the author and Zero G Peak fan, enjoysCooke City’s winter light. Photo: Leslie Hittmeier.

How it Skis

A straight and clear answer to “how it skis?” is this: great. The trend towards stiffer rewards more aggressive skiers, but there’s some downside too, and that can be flexing into a brick wall of “stiffness” as you initiate and drive through a turn. Progressive is a buzzword, and with ski boots, a boot’s flex becomes stiffer the deeper you push into the flex pattern. Driving the Zero G Peak Carbon through a turn is a sensation of soft initial flex and a smooth transition as you tap into the chassis’ carbon for more robust stiffness. “The biggest difference here compared to other boots is the predictability of the boot in adverse conditions,” notes our WildSnow reviewer. “The down is truly where this boot shines, and I’m a believer that if this is what Tecnica can do on their first try at a boot in this class, all other MFGs may need to bow down…”

How it Tours

Not a rhetorical question, but, with this boot, it may seem that way. Strolling uphill, casually chatting up your mates on the skinner, you might be the one gasping the least and grinning the most, as the tour mode and walkability are on par with the best non-race specific boots. Transitions are relatively straightforward; from ski-to-skin, loosen the power strap’s cam lock and buckles if need be, flip up the spring-loaded throw in the rear, and get giddy busting a lung.

Gripes

All things evolve, well, maybe most things. And we currently see, really, only one area for expedited evolution in this boot. The ski/walk throw, when not locked in ski mode, protrudes a bit from the boot’s rear spine. Catching the throw on an obstacle is unlikely since, most often, when walking, climbing, booting, or scrambling, you face the slope. But if things get a bit gymnastic, as they are likely to do ascending more complex and technical terrain, snagging the throw and even breaking it may not be out of the question.

Rear view of the Tecnica Zero G Peak.

A close up of the Zero G Peak’s lockout mechanism. It is spring loaded and easy to use.

Closing Thoughts

If you haven’t exhaled like we asked at the onset of this best-of blurb, please do so; the Oxygen will do you wonders, as will slipping on a pair of Zero G Peaks. The skiability won’t disappoint, and it has Zero in the name, meaning the weight conscious should apply— the world adds another great boot to the 1kg class. As far as touring gear goes, we live in good times.

Size tested: 26.5
Verified Weight: 1,013g
Women’s Specific Model: Yes, Zero G Peak W
ROM: ~ 75 degrees
Materials: Carbon cuff, carbon-Grilamid lower.
Last: 99mm
Forward Lean: 13 to 15 degrees by adding a spoiler.
MSRP: $949.95

Shop for the Zero G Peak Carbon.

2022/2023 S/LAB MTN Summit.

New for 2022-2023, Salomon debuts a rethink of the S/LAB MTN Summit. This comfortable boot skis stiff and keeps the weight to a minimum.

Salomon S/Lab MTN Summit

It’s been a few years since Salomon turned heads with a lighter-weight boot option — consider our heads turned. In the lineup of new 1kg boots debuting this fall, Salomon’s S/Lab MTN Summit is an eye-catcher and welcome entrant to this boot class. What makes the S/Lab MTN Summit appreciated is it offers up another option for dialing in fit while not sacrificing skiability. The boot weighs a respectable and confirmed 1206g/boot in size 27.5. Some may gasp that the boot yawns beyond 1100g or so. With the extra 100g, you should find this boot near the stiffest of the offerings in the class, rivaling stiff-booted stalwarts like the Scarpa F1 LT as setting a high benchmark for lightness and stiffness.

Fit Tips

The folks in France call this a 100mm last. At its narrowest part, that width may feel true to size. But the forefoot of the boot and liner feels markedly wider. Read that not as loose and too roomy, but more as the WildSnow review explained, like an Altra trail running shoe where the toe box offers ample room for toes to spread and feet to swell during long tours. For those who like BOA closure systems, this boot should suit you: the “touring belt” around the ankle forefoot region snugs the heel down and locks the foot. The heel secures average heels in place. Skinny-heeled folks may need to augment the fit there otherwise. One nice fit feature on this boot is that skinny calved skiers likely do not need to take up volume in the upper cuff. The buckle-strap and power strap secure the liner and shell nicely around thin calves.

How it Skis

The 1kg boot class runs the gamut from softish in the Dynafit TLT X and the Fischer Traver CS to stiff in the F1LT. The S/Lab MTN Summit is akin to the F1LT in stiffness, which translates into the ability to drive slightly longer, burlier, and wider skis than you usually would imagine. The flex is progressive; still it is good to know that the progressive nature of the flex begins further along in the stiff end of the soft-to-stiff spectrum. This means the initial flex of this boot is stiffer than other 1000g slippers. Skiing in this boot is a highlight, as you’re not hauling up excessive weight. If they fit your fit, you’re likely not going to feel underpowered: skiing in this boot is like taking the bull by the horns and being in control.

tour to ski mode with an easy flip.

Tour to ski mode in this boot requires a simple flip of the walk-ski mode lever, a flip of the upper buckle, and maybe some loosening of the upper powerstrap.

How it Tours

As stiff as this boot is, there is some give when it comes to touring. It tours well, but there’s a qualifier. To maximize the boot’s range of motion, you need to loosen the power strap significantly, flip the buckle open, and even then, maybe loosen the velcro. With the addition of a liner sporting a stiff and reinforced upper cuff, you’re not taking advantage of the full range of motion if you don’t take these measures. And that range of motion is ample. Not quite in the realm of the Travers CS, but still, it walks/tours relatively friction-free when appropriately adjusted. The boot also is comfortable, so something you can go up and down and back up again in… all day long.

Gripes

There are no monumental grips with this boot. Try it on, though, as we suggest with any new boot. For many, it’s a comfortable ready ski fit out of the box. The only notable potential downside is the relative stiffness. Many skiers want the lightest, stiffest option of boot they can purchase. That’s sometimes not the best route for happy feet and happy skiing. Even if the boot fits, ensure the flex profile will work for your skiing style. This is still unsettled, but supply chain issues may impact early season delivery of this boot.

Closing Thoughts

Flex, flex, flex — we mentioned it many times. If the flex profile doesn’t work, but the fit is perfecto, Salomon offers slightly lower-priced options that flex softer. That’s one part of the equation, and as such, it helps bring Salomon into the realm of lightweight touring boots that can charge, tour, and rip on big lines.

Size tested: 27.5
Stated Weight: Actual weight 1206g/boot
Women’s Specific Model: Yes, MTN Summit Pro W
ROM: ~75-degrees
Materials: Ultramid shell, heat moldable
Last: 100mm
Forward Lean: 13.5 degrees, bumps to 16.5
MSRP: $799.00

Shop for the S/LAB MTN Summit.

Scarpa F1 LT

Scarpa’s F1 LT still is amongst the lightest stiffest boots around and it has found a cult like following. From steeps to long tours, the F1 LT will be at home.

Scarpa F1 LT

The Scarpa F1 LT remains at the top of the pyramid of 1-kilo boots because of its super stiff and supportive design and proven durability. We have had testers put well over a hundred days on them, with many of them on inappropriately and manufacturer-warranty-voiding wide skis. These boots are burly enough to push even a 100mm waisted ski, although Scarpa wisely dissuades this practice and sets the threshold at 90 mm for them to cover breakage. A lighter or newer skier could find the lack of progressive flex unforgiving, but the experienced ski mountaineer looking for the highest performance boot in this class should consider it.

Replacing the out-of-print Alien RS, but drastically cutting into the less stiff Scarpa F1’s sales, this boot is a Wildsnow fan favorite.

Fit Tips

With a 100 mm width across the forefoot, this should be a middle-of-the-road fit. If anything, the F1 LT fits on the narrower side, making it a great choice for medium to narrow-width footed skiers. Contributing to the slight out-of-the-box tightness is the Intuition Pro Flex Tour liner. Luckily, there is no better lightweight liner in the game than this customizable choice. After 10 minutes in a bootfitter’s oven and a foam toe cap, any skier will have notably more room. Pro Tip: If you can handle the pain, ski in the liner for a few days and avoid the heat mold. Because there is less to this liner, the liner incrementally breaks down every time you heat it. Replace the liner often, every 60-80 days, for best results. Although the width can be expanded and punches added to this carbon-Grilamid shell, don’t expect significant movement as the material likes to retract as it cools. The biggest fit issue is that the Boa provides only a tiny bit of real tightness even when cranked down. Find a footbed or bootfitting foam to take up volume, so the BOA turn only takes up the last tiny bit of room.

How it Skis

Well-balanced skiers already used to light boots will enjoy this boot. It is stiff both forward flexing and laterally as you lean into a turn. The cuff tends to be higher than other boots in this class, adding to its support. The boot does not lack power, and when we concentrated on staying in the front of the boot, it gave back everything we put into it. We skied it with everything from a 65 mm race ski to a 106 powder ski and loved the turns. The stiff boots tend to toss the unwary skier around in variable snow or when your tired legs break down. If you are used to cranking down buckles on your alpine boots, let off the tension on the top strap, and it will add some forward flex.

Scarpa F1 LT at home on a Wyoming tour.

The Scarpa F1 LT at home during a traverse through the Gros Ventres outside of Jackson, WY. Photo: Clark Henarie

How it Tours

The F1 LT strides out the miles easily, even if we miss the awesome integrated string mechanism featured on its predecessor, the Alien RS. Although the top buckle-strap hybrid adds some skiing power, it does mean we are back to lifting the pant leg to adjust velcro before taking off uphill. To access the impressive 72-degree range of motion, you will want the cuff straps as loose as possible. The Vibram® UFO RS sole is great for walking on rocks, but the boot will quickly, if only cosmetically, deteriorate.

Gripes

Well documented in the above points, we found small sources for improvement, mostly due to testing that border on downright abuse. See a boot fitter after a few days of skiing to make up or take up space in the boot, deal with the minor annoyance of lifting your pant cuff for transitions and go out and enjoy skiing!

Closing Thoughts

The Scarpa F1 works great for experienced lightweight ski tourers or a skier looking to grow into a stiff and powerful boot. Once you make the switch, it will be hard to go back to your heavier boots, so expect some maintenance once you get over 100 days. No boot in the lineup has been tested or loved on harder than the F1 LT.

Size tested: 27.0
Verified Weight: ~990g
Women’s Specific Model: Yes, F1 LT W
ROM: ~ 72 degrees
Materials: Carbon Grilamid cuff and lower shell
Last: 100mm
Forward Lean: 9 degree, 11 degrees, and 13 degrees
MSRP: $899.00

Shop for the F1 LT.

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More Ski Days on the TLT X

by Jason Albert
written by Jason Albert

Another morning striding along in Dynafit’s TLT X. Photo: Brian Parker

Love ’em or hate ’em, they work, or they don’t: I’d often heard these binary statements about Dynait boots. For me, the earlier iterations of the TLT, the 5 and 6, were unkind, as in semi-painful. A few boot iterations later, and here I am, having skied and mostly loved the TLT X for the past few months.

I’ve been in the boots for roughly 25 ski days, including a week-long traverse with a 38-pound pack. For that tour, I slid around on the Black Crow Mentis (178cm), a great pairing with the TLT X. Outside the tour, I’ve been using a 2022-2023 Blizzard Zero G 95 (171cm) and, on two occasions, a 2022-2023 Black Crows Ova.

After sufficient time on the boot, I wanted to jot down some thoughts. If you missed my initial review, you could garner some background information on the boot at this link.

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TLT Thoughts: The 5, 8, and the X

by Guest Blogger
written by Guest Blogger

By Kevin Grove

A bit about me, I prefer a single boot quiver. This means I’m using one boot for all types of snow, and any ski under my foot. I occasionally ski at the area with my young daughters, but I’m 99% in the backcountry. I prefer skiing technical descents in the mountains, but any turn is usually a good turn, so I’m not that picky. I’ve owned Dynafit TLT boots exclusively for the past decade or more. Here are my notes comparing the TLT 5, TLT 8 Carbonio, and the new TLT X.

From right to left: Dynafit TLT X, 8, and 5.

Sizes in each make:

TLT 5:28.5

TLT 8 Carbonio:27.5

TLT X:27.5 (Came stock with a 27 liner, I placed my own 27.5 liners in the X)

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