Waterproof full-grain leather with rugged pigskin upper. 400-gram Thinsulate™ Ultra Insulation adds warmth. Permanent direct-attach construction seals out water. Patented, long-lasting Dri-lex® lining wicks away sweat and keeps skin dry and comfortable. Removable double density footbed adds cushioning and stability. Tough, lightweight polyurethane midsole. Fiberglass shank stabilizes foot, weighs 75% less than steel and reduces fatigue. Vibram® Rubber outsole maximizes traction and performance. Also available in steel toe style #W03176.