Premium Nylon 11 inch mid calf upper features waterproof lightweight molded rubber Shell with fully insulated lining This outdoor winter boot offers water resistant construction with quick drying lining to keep your feet dry; toggle collar to keep debris out Fixed faux sherpa liner/ removable EVA insole offers extra cushioning for a comfortable fit; premier 200 gram Thinsulate insulation keeps your feet warm Adjustable hook and loop strap/toggle collar ensure secure fit; heel pull strap makes it easy to get on/off Durable multi directional rubber outsole ensures traction/shock absorption/good abrasion resistance in snowy or icy conditions