Olympus Mons S

First time wearing a boot this light above 7,000 meters, and the weight difference was immediately noticeable on every step. The sub-1000 gram build made a real difference on the long push to the summit.

Fourteen hours on the mountain and my feet never felt the cold—the sub-1000g weight made every stride feel almost effortless, and the fit locked in without a single hotspot. Coming from my old clunky pair, this is a game-changer.

Climbing Denali, my feet stayed warm and dry even in -40°F winds, and the BOA lacing system made adjustments quick with thick gloves on. For a boot this light, the stiffness under crampons is surprisingly solid.