Salomon S-Lab X Alp Carbon GTX Boot

A lightweight and flexible boot for high-alpine missions.

Taking cues from its high-tech hiking and trail running footwear, Salomon's S-Lab X Alp Carbon GTX Men's Mountaineering Boot is a brand spanking new offering designed to move quickly and comfortably from rugged approaches to glacier travel to summit pushes. Unlike burlier expedition-ready boots, the X Alp sports a flexible Contagrip sole, the better to handle changing conditions, and a Carbon Edging chassis that provides support and power without sacrificing feel and versatility. Apart from these details, it has most of the hallmarks of a classic mountaineering boot: a zip gaiter with a Lycra collar and gusseted tongue to keep snow and debris out, an EVA and Ortholite footbed and midsole for lightweight cushioning and protection, and rubber toe and heel caps to increase durability and reduce impact.

Maybe most important is the Gore-Tex Performance Comfort waterproof and breathable membrane. It will keep your feet dry in snow, rain, and mud, all while moving moisture away from your foot so you don't get excessively sweaty. Combined with the X Alp's foot-hugging Seamless Sensifit construction and Quicklace easy-cinching closure, this will give you confidence and precision on all types of terrain and in temperatures all the way down to 20 degrees, making it a perfect boot for fast and light single-day mountaineering trips.

  • Gore-Tex Performance Comfort waterproof and breathable membrane
  • Seamless Sensifit construction
  • Carbon Edging chassis
  • EVA and Ortholite footbed
  • EVA midsole
  • Non-marking Contagrip sole
  • Zip gaiter with Lycra collar
  • Rubber toe and heel caps and TPU mudguard
  • Gusseted tongue
  • Reviews
  • Q & A

X Alp in a K2 overboot

I have heard that these X Alps are good down into the 20's. Anything lower than that? Yeah, I could see getting cold feet really quick.

I plan on climbing Rainier in these things here soon. The Overboots will be a simple thing to add to get extra warmth if needed.

X Alp in a K2 overboot

How did the Rainier trip work out for you?

Soon.. Early June was frigid sub zero temps. July and now August is showing itself as a task to find a reliable climbing partner, which always seems to be a task in and of itself. It might come down to applying for the solo permit.

Serious snow hike straight outta the box

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small
  • Size Bought: 10

Used for the first time on a solo hiking trip just north of NYC this past weekend and got caught in winter storm "Jonas." On the hike out, weather was clear and in the mid 20's. My feet were so warm that I had to unzip the integrated gator halfway (I DO run a little warm in gear)! Day two was spent hiking through blizzard conditions with temps in the low 20's and winds 20-30 mph. The boots were still VERY warm. Day three required a hike out in deep snow that routinely had me busting 3-4 foot drifts. ZERO snow was able to make its way into the boot because of the integrated gator (even with my fairly narrow ankle/calf).

The "boots" are VERY light due to their hybrid trail shoe/bootie construction, making it possible for me to hike through very deep snow without becoming completely exhausted. Grip was also very good (no microspikes were used). I imagine these would work very well strapped to a pair of snowshoes in the conditions described above.

Worn with a CoolMax liner sock and Smartwool lightweight ski sock.

The boot runs only slightly small (I usually wear a 9.5 in Salomon footwear).

Narrower than Salomon speedcross shoes.

  • Fit: Runs small

I purchased a 10.5 which is the same size as the Salomon Speeedcross running shoes I have.

I slid them on and something was off. I checked the size to make sure they were 10.5's. They are. So I pulled the insoles out and compared them to the same Ortholite insoles that are in the Speedcross shoes. The boots are 3/16" narrower than their trail runners in the forefoot.

The good.. They are really light. They are a great boot/shoe for hiking and training getting ready for larger climbs. I want to climb Rainier in them this summer. I matched them up with Petzl Vasak Flexlock crampons and they pair up really well.

The Bad.. The speed lacing system in the cinch part is temperamental and the overall quality is kinda lacking. Compared to the quality of other boots like La Sportiva.. Not even in the same league of build quality.
These are not cheap boots cost wise, but they are on the cheaper side of quality compared to the price you pay. The Trango Cubes are just a few dollars more and are a work of art in comparison of quality.

Overall.. They are comfortable out of the box and their waterproofness is very nice as well. For hiking when you will run into a variety of wet and snowy conditions.. Yeah, super awesome. I just wish they would have a little better attention to detail and have a little better overall quality and craftsmanship put into them. They are made In China and it shows.

I would give them a close, but not perfect overall rating. I will be using them in Europe while in Chamonix, also using them this spring and summer on Mt Adams, Mt St Helens and Rainier training hikes.

The concept of this shoe/boot is awesome. If Salomon took a little more pride in the craftsmanship of their goods and where they are produced. They would be hitting it out of the park with these boot/shoes. They aren't, so it just is what it is.

* I called the people at Salomon and spoke to one of their customer service reps about the loosening issues in the speed laces.
I saw online that if you are having issues with your speed lacing system that Salomon will send you a new pair of laces. I checked the difference between the Speedcross Shoes I have and these boot/shoes. The guy online was totally correct that these are thinner than normal and the cord is not what Salomon sells and has on their other shoes. Salomon is aware of the problem in these things, but will Salomon take care of their problem? Nope, not really the case. The rep said there is a checkout code to get the laces for $1 instead of $10, but that is all he could do.


If you are having trouble with your laces just go to their website and create an account. Pick a color of laces and use the code at checkout. Free shipping and charging your credit card $1.10.

Salomon can kinda go suck a giant d*ck. I guess it is better than nothing, but they should just take care of their customers and send out a new set of laces to replace the defective ones the idiot Chinese put in them.

Once these wear out.. I am done with Salomon. Which is too bad, because they have an awesome concept here and a boot/shoe that most people would really enjoy wearing. Either step up your game or lessen the price to match the throw away quality.

I wish Scarpa or La Sportiva would come up with something similar. Those I bet would be phenomenal and a boot/shoe that would last and last.

Narrower than Salomon speedcross shoes.
Unanswered Question

I tried on a pair of the Ultra Mid 2 GTX hiking boots and found that I need to go down a half size, will these boots have a similar fit?

Unanswered Question

Can you tell me what the heel to to drop (or midsole heights) are in this shoe? i.e, are these a 4mm drop like other s-lab shoes?

Another view

Love the Salomon quick lace system!

Another view

Rad Boots

Trekked around Chamonix in these Boots. They fit true to size are great to wear for the approach as well as the climb. Amazingly comfortable work great with crampons. All round great boot.

Rad Boots

any comments on the durability and sizing? did you upsize or downsize your normal hiking/ climbing or running shoes?

I would stick to your normal Hiking/climbing size I usually size up for running so I would not recommend that. As for Durability, these shoes are amazing, put them through the wringer and they definitely stood up, walked away with minimal wear other than mud.