Full-grain leather upper means extra strength and instant comfort. Breathable GORE-TEX® waterproof membrane lining. 400-gram Thinsulate™ Ultra Insulation adds warmth. Removable full-cushion lining. Compression molded EVA foam midsole. Steel shank. Classic Goodyear welt construction is sturdy and flexible. Vibram® rubber lug outsole maximizes traction and performance. Steel-Toe rated ASTM F2413-11 M I/75 C/75 EH.