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La Sportiva
Olympus Mons Cube Mountaineering Boot

4 out of 5 stars
5 Reviews


Size Chart


Why We Like The Olympus Mons Cube Mountaineering Boot

The La Sportiva Olympus Mons Cube Mountaineering Boot is an updated version of La Sportiva's Olympus Mons Evo. We appreciate that this boot still boasts the same tough super gaiter that made the original Olympus ideal for faraway mountaineering objectives, but also like that La Sportiva updated the outer boot with a dual Boa closure for a quick, simple, and secure fit.

La Sportiva insulated the removable inner boot with single-density foam, and the alloy-lined footbed with Primaloft's Gold Aerogel. This Carbon Tech footbed creates a stiff platform for stability on glacial traverses and support on vertical ice climbs. The Olympus Mons Cube's sole is also updated with Vibram Litebase rubber in key areas that demand durable traction, while the remaining sole features Vibram's Morflex expanded EVA rubber for a lighter weight than the original Olympus Mons Evo.


  • Mountaineering boot updated for high altitude expeditions
  • Super gaiter made with Stretch Cordura and a watertight Corner Zip
  • Outer boot outfitted with dual Boa closure for a quick, secure fit
  • Removable inner boot insulated with single-density foam
  • Alloy-lined Carbon Tech footbed insulated with Primaloft Gold
  • Vibram Litebase sole with Vibram Morflex paneling for a greater grip
  • Compatible with step-in crampons and skis that have tech bindings
  • Item #LSP00MQ
Upper Material
Stretch Cordura, high-tenacity nylon
Carbon Tech honeycomb (3mm), Primaloft Gold Insulation Aerogel (3mm)
Cordura Flex Zone
Removable Liner
[gaiter] Corner Zip, Boa [inner] hook-and-loop
PU (2mm)
Vibram Litebase, Vibram MorFlex (expanded EVA)
super-gaiter boot
Crampon Compatibility
step-in, Skitrab Tech-AT
Claimed Weight
2lb 5oz
Manufacturer Warranty
1 year

Overall Rating

4 based on 5 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 1 reviews
3 Stars - 0 reviews
4 Stars - 2 reviews
5 Stars - 2 reviews

Fits Slightly Small

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Runs smallTrue to sizeRuns large

What do you think about this product?


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2 out of 5 stars

February 15, 2022

What Was LaSportiva Thinking??!!

I've used it several times
Size Bought:
5' 8"

I am making my second trip up Denali this spring. Last trip I used my Spantiks. I love those boots, but they do not keep my feet warm, as I have some circulation issues. This go around the decision to go with an 8000 meter boot was an easy one and since I've never had fit issues with Sportiva, the new Oly Mons Cube was what I purchased. Out of the box - they are beautiful boots! Everything about them appears to be extremely well done and the quality appears to be off the charts..........until you put them on and start climbing!!!! The outer shell crushes my upper ankle / lower shin on both feet. It is so apparent and painful that I find it hard to believe that LaSportiva is not racing to fix this issue!!! There is absolutely no way I could survive 20 days on Denali with these boots. I don't know if it's a liner issue or an outer shell issue but right where the boots flexes - right where my ankle flexes is like there is a hard, plastic pipe around my ankle and every step you feel this think flex hard against my ankle. As is mentioned in the other reviews, I will try my Spantik liners or Intuition Liners. Very dissapointing for a $1200.00 boot!!

Roger D
4 out of 5 stars

July 28, 2021

Crampon Advice

I've used it several times
Size Bought:

A quick note on fitting crampons with the ski tech inserts on these boots. I couldn't find much info on pairing crampons with these elsewhere on the internet. The ski tech inserts make the front toe bails very wide, so they don't fit most semi-automatic crampons. I bought these boots in a 48 (admittedly a large boot) and only found one semi-automatic crampon that fit reliably: the Grivel G-12 with the cramp-o-matic bindings. The BD Sabretooths, Petzl Vasaks, and Grivel G14s with the New-Matic bindings did not fit. The poor fit was not a length issue. Automatic crampons seemed to fit a little better. The Petzl Sarkens with the wire toe bail and the Camp Alpinists both had wide enough toe bails to accommodate the ski tech bindings. But I prefer semi-automatic crampons for less technical glaciated mountains where I'm doing more uphill walking and not climbing vertical ice. If you want to avoid the issue altogether and won't use the boots for skiing, I'd buy the Olympus Mons Cube S. The "S" version doesn't have the ski tech inserts. (Absolutely no clue why Sportiva labeled the non-ski version with an "S.") Other than the crampon issue, these are great, though I agree with other reviews about the liners. They have a weird fold at the top that rubs your shins when you aren't wearing over-the-calf mountaineering socks. Liners from the Spantiks solve the issue. As far as fit goes, I wear a 13 street shoe and a 47 in the Sportiva Trango Tower Extremes, which I fit a bit tighter for ice climbing. The 48 gave me some extra room to wiggle my toes, but it didn't feel too loose.

Jordan R
4 out of 5 stars

December 21, 2020

Amazing boots, terrible liners!

I've put it through the wringer
Size Bought:
6' 2"

Summary - The best 8000m boot out there, but be ready to buy alternative liners. I purchased the Oly Mons Cube for Everest and tested them out this weekend in the White Mountains doing 17 miles and 9000 ft elevation gain. Comfy, warm and light boot around my feet but they ripped my shins apart. My shins were in severe pain, plus were blistered and bleeding requiring considerable time out of the boot to recover. It was the liners. I am extremely disappointed in their liners and I wouldn't survive a few days wearing these on Everest, and not what you would expect from a $1200 boot! I have a pair of Spantiks I used to climb Denali (which are comfy btw, but not suitable for Everest). I dropped in my Spantik liner, they are way comfier with the Oly Mons Cube and make a great replacement. The tongue at the front°of the liner is the key (no tongue on the Oly Mons Cube liner), it stops all the chaffing. I hear from a guide friend the Baruntse liner also works well, or even better replace with an intuition liner with a tongue. I am a size 12 US, and always go up a size (bought size 47 / US 13) in all my La Sportiva boots.

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Gareth J
5 out of 5 stars

November 5, 2020

Perfect for those cold days

I've put it through the wringer

These boots have been through the ringer!!! From climbing in Nepal and Mt. Everest to mountaineering expeditions and ice climbing trips in Alaska, these boots hold up. Super comfy after you break them in, and my feet have NEVER been cold with these guys. Super insulated. I'll be using these boots until they fall apart. (Photo: Sukakpak Visuals)

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Kelli S
5 out of 5 stars

April 13, 2020

Worth The Wait & Can Hardly Wait To Use!

When I heard the Olympus Mons were being updated with the boa system it wasn't even a question of if I wanted to try them, but whether I could get a pair before leaving for Nepal this season. They arrived soon after their release but just before the Everest season was canceled...and so the boots sat in their box likely due to the disappointment that all my gear packed would now be set aside for adventures on a date unknown. Yesterday though I couldn't hold off trying them on any longer and they are everything and more I could have hoped for. This is of course a review based on never having them outside my quarantined home, but I have never tried on a mountaineering boot and had them be this comfortable right out of the box. Light, nimble feeling on the mountain, I think I may have done a happy dance in them after getting them on. The boa system is a game changer as for years frozen fingers and trying to tie up my boots has been a struggle I never looked forward to, but that is gone. But it is not just the boa system. The zipper securely runs the foot and along up the calf in a way which feels like it keeps the boot more flush to your leg and physically follows a natural line. The inner boot begins with a slipper like sock that then slips into the inner boot. Both feel an improvement upon the previous design. Everything about this boot makes me happy and of course will know more once I am on the mountain with them, but my initial love is deep and ever devoted. Worth every dollar and more.

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