K2 SnowboardsAspect Boa Snowboard Boot - Men's

Crosses the line between snowboarding and mountaineering.

With integrated heel welts, a leather upper, insanely grippy Vibram outsole, and a bevy of other features, the K2 Snowboards Men's Aspect Snowboard Boot is designed to keep your feet happy and secure through long days spent in the backcountry. Unlike any other boot out there, the Aspect is designed to breeze through the most technical situations, when you've got your crampons on, axe in hand, and you're about to take on the last pitch for untouched big-mountain glory.

A rugged, waterproof leather upper and traditional laces make up the exterior of the Aspect for reliable protection and a fit that you dial the old-fashioned way, while the thermo-moldable Intuition Pro Foam 3D liner with a Boa Conda lacing system conforms to the natural shape of your foot and locks you in quickly without having to mess with internal laces. To further overall stiffness, response, and support, the ENDO urethane skeleton construction provides a precise, engineered flex that stays consistent from day one through the life of the boot, while adding a lively, energetic feel that reduces fatigue on demanding days.

Internal and external J-bars lock down your heel to help prevent heel lift when dialing your turns in no-fall zones is of the utmost importance, and the 3D-formed dual density EVA footbed absorbs harsh impacts from dropping huge cliffs and navigating choppy terrain. Specifically designed for boarders who mountaineer to access their lines, the Vibram Mountaineer rubber outsole has a traditional lug design and is crampon-compatible to safely get you to the top of technical ascents.

  • Super-stiff, freeride boot built to handle technical alpine lines
  • Traditional lacing and Boa liner offer the best of both worlds
  • Thermo-moldable foam liner conforms to the shape of your foot
  • Urethane skeleton delivers a precise flex for tons of support
  • Internal and external J-bars help eliminate heel lift
  • Impact-absorbing footbed reduces fatigue on heavy days
  • Mountaineering-specific rubber outsole is crampon-compatible
  • Reviews
  • Q & A

Great boot for backcountry and resort

  • Familiarity: I've put it through the wringer

This boot is great for splitboarding and riding in resort. I even climb rock with these boots approacing The Tooth!

The reason I don't give 5 start is because the laces take some time to get used to tie them I think it would be better with speed lacing like Burtons.

Great boot for backcountry and resort

Great great boot

  • Familiarity: I've used it several times

Surprisingly light and once you get a hang of the lacing it is easy and fast ish to take on and off as well. Love the grip and they are super stiff. Being able to loosen the top strap to allow for longer strides is also super useful.

I bought these along with the rome guide and burton tourist and ended up picking these because of their stiffness, comfort and light weight. I would do it again in a heart beat. Great boot.

Great boot for backcountry and inbounds

  • Familiarity: I gave it as a gift but have feedback to share

Super stiff but adjustable with the lacing system and booster strap. The ridged sole is great for bootpacks and the heel welt will support crampons for steeps. He put custom foot beds in the intuition liner.

Bomber boot!

    I have put about 20 days in these so far. I’ve been thoroughly impressed. I am very hard on all my gear, especially in the backcountry. They initially showed signs of wear from being in the bindings which was concerning, but has ceased to continue. I use these both in the resort and the backcountry and they work great in both environments. I have found the stiffness to be a little softer than I prefer, but overall a very stiff boot. The sole is great, has held in all conditions, ice, rock etc. The BOA system is awesome and really locks in the heal. The power strap is great too. The laces seem to untie easily, double knot and you’re good. I went with an 11.5, I’m a 12 Street shoe. I probably could’ve gotten away with an 11 in this boot. From what I could get my hands on, this is the most bomber boot by far. That is comparing it side by side as well as trying on the Jones MTB, Burton Tourist, Rome Guide, Deeluxe Spark XV.

    Great boot, but not without issues

    • Familiarity: I've put it through the wringer

    I'm almost through my second season (18th months of riding) with these boots. First off, the stiffness is great. Definitely a very stiff boot, but does break in and soften up a bit as most snowboard boots do. Not enough to greatly change the characteristics of the boot, but just enough. I chose this boot because finding a lace up boot with a heel welt is limited to basically these, and a pair of Fitwells. Since these are much cheaper, I thought I'd give them a shot. About half a season in, the boa cable snapped in the right boot and there's no great way to re-thread a new cable so I just cut everything out. The boot still fits well, so I'm not too upset about it. I'm just frustrated that it happened so quickly (I never really cranked the boa system down too tight). The heel of the boot started to separate a bit from the leather, but a bit of glue resolved that. The construction isn't that great on these boot, but simply "good enough". About what I'd expect from K2. Overall they're not a bad boot. There's a lot of improvement I'd make, but it really just comes down to preference and light construction issues. I should mention that I also use these with a Karakoram prime system and have had no troubles. Any heel drag can be adjusted out.

    Aspect the best

    • Familiarity: I've put it through the wringer

    Tried on countless boots and even as stiff as these are they feel great out of the box. Bomber construction and materials, leather looks/ feels so much better than plastic and fit customization with the Boa/lace/power strap is sweet.

    A splitboarders dream

      I got these boots to start the season and couldn't be more please with them. It's a very stiff boot that is ultra responsive. The BOA ankle lock on these things are amazing. I had the Burton Tourist for two season and could never get my heel/ankle to lock in place fully which would cause blistering. These don't have that same problem with the ankle lock. The crampon communicability with these are also better than the Burton Tourist. While they both have a heel welt for crampons, the heel of the Tourist was to wide to easily put a crampon on it. You could make it work, but it was the equivalent of shoving 2lbs of sausage in a 1lbs casing. The heel on these are narrow enough where I don't have the same problem with my Petzl Irvis Hybrid Crampons.

      Hi Sam. I just bought the Petzl Irvis Hybrid Crampons to use with Spark Deeluxe XVs that I got for super cheap. I really don't like the fit of the Sparks and the crampon really doesn't fit very well on it. My resort boot has been the K2 Thraxis for the last 6 years and I've really been happy with them. After reading your review it sounds like I should really get the Aspects, as they are similar to the Thraxis, and will work with my new crampons. Do you have any comments about the outer lacing? One of the reasons I bought the Thraxis for so many season was the lack of laces.

      Initial impressions great! (Karakorams)

      • Familiarity: I've used it once or twice and have initial impressions

      [edit] Another user didn’t have good luck with Karakorams, I just got my new split board and mounted up my Karakoram Primes with these boots. Yes K2 Aspects have a lot of natural forward lean causing the heel to stick back further in the bindings. I had to adjust my bindings to the small position from the large position that I had it setup with my old boots. Now everything looks nice and centered. Haven’t ridden with them yet but looks promising.

      It's great to see the improvements in technology as related to splitboarding! I finally felt it was time to upgrade my old malamutes to something designed with crampons in mind.

      I read about the other crampon compatible boots and these seemed to fit my style the best, I didn't want anything quite as stiff as the Fitwell's.

      The K2 Aspects are still stiff, and just the right amount. Usually I wear an 8.5 boot but I chose the 8.0 in these due to other reviews and some local shops who had tried them on, the 8.0 is perfect! Just got the liners heat molded today too.

      I love the beefy sole and the Boa liners. I've never been a fan of traditional laces on snowboard boots but between the laces and the power strap at the top I don't mind it at all.

      I use Karakoram bindings so I'm a little worried from what a previous user mentioned about them not fitting well. I have the Karakoram Prime's and they do have some adjustability in the heel cup so hopefully I can get them to work, I'll update my review after I'm able to field test these.

      Haven't chosen a crampon for these either.

      Overall, I'm stoked about these, and they are WAY easier to get on and off than my old Malamutes, they were kinda a pain IMO.

      Hi Jaime, finally it happened with the aspect boots and the karakoram. You could comment me because I want to buy these boots and I just have karakoram on my table.

      Right on

        These fit true to size and are exactly what I wanted

        Beware if you have karakorams

          These boots are 100% unusable with karakoram bindings. The way K2 makes their boots they have very unusual heels that stick WAY WAY out and the heels suck so far back into the heel cups that there's an insane amount of heel overhang that can't be eliminated with any binding adjustments. I had another buddy have the same problem with these boots. I doubt they're much better with sparks either. It's a design flaw with all K2 boots. I had T1's and they barely fit into burton resort bindings because of the heel. I love the fit of K2 boots but I'm done buying them until they change their design.

          These boots work fine with Karakoram Primes. There is no issue at all. 11.5 boot in Karakoram Primes in L, on a Jones Solution.

          pretty rad

          • Familiarity: I've used it several times

          gave these as a gift to a buddy of mine. here is his feedback:
          These boots are burly and made for split-board mountaineering. Between the vibram (mountaineering sole) and crampon compatibility heal piece, these boots will get you to the peak of any mountain. They are surprising light for how beefy they look as well. And have an average footprint compared to other boots. They are sized a little big so I would recommend a half size smaller than normal. The boa system is great for touring to lock your heal in place ( say good by to heal blisters) The main difference I noticed with these boots compared to a normal snowboard boot while touring is the ability to hold an edge on a off piste skin track. These boots are stiff and rip going down the mountain and feel like a normal snowboard boot. They are good to go right out of the box.

          Fits perfect

            These are great. They fit perfectly and make my rides smooth and comfortable. Came right on time.