Conquer mountainous terrains with the help of the Ptarmigan. Constructed with 5mm of CR-Foam that’s covered with 4mm of rubber, this is one hard-wearing boot that’s ready to move mountains. Rated to keep you comfortable down to below freezing conditions, the Ptarmigan can withstand elevated heights and falling temperatures. Trekking through these environments can wear you out, which is when a cushioning EVA midsole comes in handy. When your game takes you to higher ground, make sure you’re prepared.