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 thatís engineered to provide superior grip on snowy and icy surfaces. Finally, a high percentage of recycled content reduces the need for virgin materials, earning Constrictor IceGrip Warm GTX M a place with Vikingís Less Impact Products.