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  • Waterproof, breathable Gore-Tex® Insulated Comfort membrane is coupled with insulation
  • Highly insulating Carbon Tech honeycomb insoles are lightweight, stiff and low profile
  • Innovative 3D Flex ankles
  • Removable, adjustable variable-fit tongue for comfort
  • Boots can be resoled


View all La Sportiva Men's Mountaineering Boots

REI membership


Best Use Mountaineering
Footwear Height Over-the-ankle
Footwear Closure Lace-up
Waterproof Yes
Upper Polyurethane
Lining Insulated GORE-TEX Comfort synthetic fabric
Insulated Yes
Insulation GORE-TEX Insulated Comfort synthetic
Midsole Polyurethane
Support Carbon Tech honeycomb/4mm EVA
Outsole Vibram rubber
Can Be Resoled Yes
Crampon Compatibility Step-in
Average Footwear Weight (Pair) 3 lb. 15 oz.
Gender Men's

Size chart

Sizing notes

For rock climbing shoes: Choose soft shoes two to three sizes smaller than your street shoe size. We recommend you fit your trad shoes one to two sizes under your street shoe size. Remember to factor in stretch. Unlined slip-lasted shoes tend to stretch about one full size. Lined shoes stretch about a half size. Remember: a well-fit comfortable shoe will work better than an ill-fitting tighter shoe. For boots: Add one half size to your street shoe size. You should be able to slip one finger behind your heel when you are standing up with the boot unlaced and your toes touching the front. If the boot is too short, your toes will get smashed walking downhill. Too long and your heel will slide up and down and give you blisters.

Rated 4 out of 5 by from Climbs great but runs cold This boot is comfortable and light. The rigidity of the boot also means that it climbs great! I have no complaints on hiking or technical climbing performance. My only problem with this boot is that it runs quite cold. In Ouray, my feet were getting cold even though it was 35+ outside. Warmth seemed to drain through the soles into the ice. When I got back to the northeast I took out the filmsy insole they came with and put in the superfeet redhots. This improved the warmth considerably. Still not great, but I would be willing to tackle conventional alpine if I expected say 15+ temperatures. Overall I am happy with them but wish they were warmer. A note on sizing for those ordering: I have narrow feet and so la sportiva products in general work well for me. Size 46 fit me great. I also wear 46 in La sportiva's trail running shoes. In men's US dress shoes, I tend to wear about and 11-11.5. Hiking boots of other brands are variable for me. I might wear anything from an 11.5 - 13US.
Date published: 2015-02-13
Rated 3 out of 5 by from Rainier Bought and returned after an extensive (failed) trial period. Buy a half size or more larger than your regular boot. My complaints are... they ran COLD. It was not uncommon to loose the feeling in my toes on peaks (Mt Washington, Eleanor, Rose, Stone (Lake of the Angels), Adams, Hood, and finally Rainier (DC)). Second concern was I could not seem to find a working combination of socks and liners to avoid heel burn. Eventually I started to tape my heels before heading out. Third complaint is they wear out quickly. Crampons beat up the edge and the tread wore quickly likely due to traversing exposed stone (...think Enchantments). I have nothing to compare these to so I supposed you can take my experience with a grain of salt (Despite a friend in AK having a very similar experience). In other news... they lace up nice, have a tongue insert for those feet, and have a good balance of rigidity and stiffness. They pointed well in everything in all conditions. They'll help you look the part! I'll try a different boot for this years attempts. I never thought to try an insert... a valid point.
Date published: 2016-04-21
Rated 5 out of 5 by from Nepal Cube GTX This is a VERY nice boot. the quality of the boot is obvious when you first open the box. I have not used them yet, but they feel great on the feet, really lock them into place, in a comfortable manner. For sizing I usually wear 11.5 - 12 , and I got a 46, which is 12.5 or something. I would not have wanted to go any smaller, but I do have wider feet. Anyway, as of now I say they are worth the big bucks, we will see how they perform. Im expecting greatness.
Date published: 2014-08-07
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What size of US 8 for that. Thanks

Asked by: Marslan
The smallest size REI carries in this model is a 41, which is equal to a US 8.5. A REI store may be able to special order a 40.5 (US 8) for you:
Answered by: REIservice
Date published: 2015-09-20

Help! I really want to love these boots, but I keep getting bad blisters on the heels. I have worn them on several hikes trying to break them in. Probably totalling 50+ miles. What am I doing wrong? Too tight? Too loose? Wimpy feet?

Asked by: RSeitz
It sounds like the boots might be a little loose. You might try tying them tighter. It is also possible they could be too big. If they are too long your heel will slide up and down and give you blisters. Sweat can also cause blisters. You might look into socks that are better at wicking moisture. Merino wool is a great choice.
Answered by: REIservice
Date published: 2016-11-10
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