Tough 1000-denier Cordura® upper resists abrasion. Breathable GORE-TEX® waterproof membrane lining. 800-gram Thinsulate™ Ultra Insulation adds extra warmth. Removable full-cushion insole. Compression molded EVA foam midsole with camo wrap. Wolverine® TPU Lug Wrapped outsole resists slips. Cement construction. Lightweight nylon shank fights fatigue.