Waterproof full-grain leather or Nubuck with rugged pigskin upper. Mesh lining. 400-gram Thinsulate™ Ultra Insulation adds extra warmth. Removable double density footbed adds cushioning and stability. Tough, lightweight polyurethane midsole. Permanent direct-attach molding seals out water. Nylon shank. Vibram® Rubber outsole maximizes traction and performance. Also available in steel toe style #W05381.