Mountaineering & High Alpine Expedition Boots
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Max Berger stays dialed in with BOA as he makes his dream a reality, training for his ultimate feat of summiting K2 and Broad Peak without bottled oxygen and becoming the first person to paraglide off the peak.

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We built the BOA Fit System for mountaineering as if our lives depended on it – delivering superior heel hold and stability, secure comfort, and effortless precision in bitter, biting conditions.

La Sportiva G2 SM

LaSportiva G2SM boa

in all

From uncertain conditions to unpredictable terrain, the BOA Fit System reduces pressure points and accommodates swelling with effortless micro-adjustments for better response and custom comfort in all environments.

Lightweight, strong, and weatherproof.

Pounded, frozen, submerged, you name it, we’ve tested it. The BOA Fit System delivers control and precision while shedding water, ice, and mud.

Scarpa F80

Scarpa Boa

The BOA Advantage.

Each micro-adjustable system uses unique dial, lace and guide configurations to deliver unprecedented fit and performance. While each component is crucial in optimizing the fit experience, the foundation of the BOA Fit System is the BOA dial.

M3 uses a 1:1 gear ratio and a larger dial to increase dexterity and grip for gloved hands. Quick lace take-up and powerful closure allows for micro-adjustment in the most extreme environments and the harshest weather.

How M3 works

La Sportiva G2SM Boa Mountaineering

Making the best gear even better.

Together we're redefining the possibilities of fit.


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