Back Country is built to keep you warm and comfortable on your sub zero adventurous. Rugged 11 inch mid calf ballistic nylon upper features premium waterproof rubber shell with fully insulated lining This winter outdoor snowboot offers fully waterproof seam sealed construction to keep your feet dry; gusseted tongue keeps debris out Removable felt liner with foil bottom/padded collar offer superior cushioning; premier 200 gram Thinsulate insulation keeps your feet extra toasty D-ring quick lace up closure allows for easy/secure adjustments; a heel pull strap make it easy to get on/off Durable cleated rubber outsole ensures exceptional traction/shock absorption/good abrasion resistance in snowy or icy conditions