Experience unmatched grip and foot comfort with this ultimate winter hiker, packed with premium features and sustainability innovations. To begin with, a high cut combined with a market-leading waterproof Gore-Tex membrane and a best-in-class Primaloft insulation makes sure feet remain dry and warm in virtually any weather and ground conditions. The innovations continue below with a lightweight EVA midsole and Vibram Arctic Grip outsole thats engineered to provide superior grip on snowy and icy surfaces.  Size and Fit Last Width: Normal Materials Outsole: Natural rubber Midsole: EVA (ethylene-vinyl-acetate) Lining: Gore-Tex Insulation: Primaloft