Waterproof Nubuck leather and Cordura® nylon upper. Breathable GORE-TEX® waterproof membrane lining. 600-gram Thinsulate™ Ultra Insulation adds warmth. Removable full-cushion insole. Compression molded EVA foam midsole with fabric wrap. Wolverine® Rubber Lug outsole. Cement construction. Lightweight nylon shank fights fatigue.