Waterproof leather upper. Die cut rubber for toe and rand protection. 200 grams of Thinsulate® Insulation treated with M Select FRESH odor control. M Select DRY seals out water and lets moisture escape keeping your feet cool and dry. Merrell air cushion in the heel absorbs shock and adds stability with an EVA midsole for cushioning. Merrell Active Heat footbed EVA footbed insole with silver eflective film for added warmth. 6mm Lug height. M Select ICE GRIP outsole is shock absorbent and provides excellent traction.