Waterproof Nubuck leather upper - 200 grams of 3M Thinsulate Insulation adds warmth - Permanent direct-attach molding 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 - Electrical Hazard - Steel toe rated ASTM F2413-11 M I/75 C/75 EH - Also available in soft toe style #W03367 -