100% waterproof one-piece seamless construction improves performance - 5mm high abrasion Neo-Tech and seamless rubber design offer medium-weight - performance - Air Mesh lining and Max Wick coating evaporate sweat - Internal nylon shank for flexible support and stability - BioBased Rebound insole for comfort energy return and odor control - Vibram Arctic Grip outsole provides industry leading grip in icy conditions - Low-profile tread for maximum contact with the ground-built for hard surfaces slick - floors and driveways - Comfort range from -58F to 40F (-50C to 4C) for cold-weather warmth and two- - season wearability - Kick-off heel lug for hands-free removal