Design: Waterproof 600 denier nylon upper Adjustable snow collar with bungee lace lock keeps weather out 8 mm Thermal Guard removable liner made from 100% recycled content Moisture wicking lining Adjustable midfoot hook and loop strap for a secure fit Durability & Traction: Waterproof synthetic RubberHe shell PULSE outsole provides superior traction in the snow Additional Details: Weight: 2.9 lbs Height: 12'' Made for temperatures down to -40degF Vegan-friendly