For hiking in cold conditions, this boot intelligently maps warmth and padding where you need it for comfort to push through cold, icy and slushy winter trail conditions. Insulation is targeted where there’s more exposure, while soft and hard lugs adapt to grip varied surface conditions AND indoors. The Polarand 8 Waterproof features a 1.5mm thick waterproof upper with molded rubber toe for added durability and protection. M Select DRY waterproof construction seals out water and lets moisture escape so you stay dry when you’re on the move. The TPU molded heel is snowshoe strap compatible. 250 grams of Thinsulate Insulation treated with M Select FRESH odor control. Bellow Tongue keeps out debris. M Select Dry waterproof membrane construction seals out water and lets moisture escape so you stay dry when you’re on the move. Merrell air cushion in the heel absorbs shock and adds stability with an EVA midsole for cushioning. Grade 3 Nylon Insole for trail hiking. Merrell Active Heat footbed EVA footbed insole. M Select ICE GRIP tunes each outsole with durable traction that grips when and where you need it. 4mm Lug height.