Verdict from 8 experts and 80 user reviews

5 reasons to buy

  • Many La Sportiva G2 SM owners were impressed with its Boa lacing system. They stated that they could easily loosen or tighten the boot, even while wearing gloves.
  • Although it has a burly design, the majority were astonished by the lightness of this La Sportiva product.
  • A handful of reviewers appreciated how warm this boot is when worn in cold environments.
  • Some users commended this footgear for being very comfortable.
  • Fully-automatic and semi-automatic crampons fit securely to this boot, according to the minority.

3 reasons not to buy

  • A couple of La Sportiva G2 SM buyers were disappointed when its rubber rand started peeling off after using it for a few times.
  • It is an ultra-expensive product.
  • Several mountaineers were displeased with this boot. They added that despite its comfy interior, as soon as they started walking, they began to feel pain at the back of the foot and above the instep. One even suffered from serious blisters which took a month to heal.

Bottom line

Lightweight, comfortable, and warm–these are some of the La Sportiva G2 SM’s main qualities that make it an attractive piece of gear for mountaineers. Its easy-to-use Boa closure system is also a boon for outdoor enthusiasts who need to lace up fast. On the other hand, its reported drawbacks are a cause of concern for potential buyers. Despite these issues, the G2 SM from La Sportiva delivers sufficient performance in a lightweight package.

Good to know

  • The La Sportiva G2 SM is a high-cut double boot that’s designed for mountaineering in cold environments. Its gaiter and outer boot are made primarily of lightweight Cordura material. The inner boot, on the other hand, uses a PE and EVA construction for better heat retention.
  • The boot’s polyurethane (PU) midsole provides sufficient stability and cushioning. It’s also compatible step-in crampons.
  • Surface traction is handled by the gear’s Vibram Matterhorn outsole. It is fitted with an Impact Brake System which aids users during descents.

The La Sportiva G2 SM is a fairly true-to-size Unisex alpine boot. It’s offered in standard width. Whole and half sizes are available. Per the brand’s sizing chart, women should go one size down to get the correct fit in this boot.

A customized fit is made possible by the outer bootie’s Dual Boa lacing system. It uses a set of dials that loosens or tightens the laces. The inner boot has a dual hook-and-loop closure lacing system while the gaiter is fitted with a zip closure feature for a secure fit.

The G2 SM from La Sportiva is equipped with Vibram Matterhorn a mountaineering outsole that maintains its grip performance in low temperatures. It features an Impact Brake System that creates a stopping force when going downhill. The outsole’s lug pattern is set in opposing slanted directions to increase braking capability by an average of 20%. This technology also lessens impact forces by around 20%.

The La Sportiva G2 SM has a 2mm polyurethane (PU) midsole to supply cushioning and support. It has toe and heel welts for attaching crampons. The mountaineering boot also comes with a 3 mm Honeycomb Tech insulating carbon insole that grants lightweight underfoot comfort.

The G2 SM’s upper consists of three components – the gaiter, inner boot, and outer boot. The gaiter is made of a lightweight material called Cordura, a special kind of fabric that’s designed to be tear-resistant. It also possesses a laminated and taped membrane for added water resistance. The cuff is made of an elastic Cordura variant to allow more flexibility to the boot’s user. Moreover, its zip closure system allows a secure lockdown while a nylon pull loop adjusts the fit of the gaiter.

The La Sportiva G2 SM’s outer boot incorporates a combination of low-density PE foam, thermo-reflective aluminum and perforated felt to achieve insulation. Parts of this gear contain Cordura and Antiacqua-coated-Lorica, a kind of synthetic leather, for durability, breathability, and water repellency. A Dual Boa closure system provides a personalized lockdown.

This Lowa product’s inner boot is made of 6mm PE and ethylene-vinyl acetate (EVA) foam for extra warmth.  It features a Cordura Flex Zone, which grants flexibility. A dual hook-and-loop closure system gives a secure lockdown with easy adjustability.


How La Sportiva G2 SM ranks compared to all other shoes
Top 9% mountaineering boots
All mountaineering boots
Top 15% La Sportiva mountaineering boots
All La Sportiva mountaineering boots
Top 43% water repellent mountaineering boots
All water repellent mountaineering boots


The current trend of La Sportiva G2 SM.
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Over the past 20 years, Paul has climbed, hiked, and ran all over the world. He has summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races as well as 6 marathons. On average, he runs 30-50 miles a week in the foothills of Northern Colorado. His research is regularly cited in The New York Times, Washington Post, National Geographic, etc. On top of this, Paul is leading the running shoe lab where he cuts shoes apart and analyses every detail of the shoes that you might buy.