LaCrosseA(R) Ridgebacks feature suede and abrasion-resistant nylon uppers, a 100% waterproof Dry-Core lining, and varying levels of Thinsulate Ultra Insulation to suit different weather conditions. Molded PU footbed for cushioning and a fiberglass shank for support. Thick, cushioning EVA midsole and multi-directional, non-loading lugs for stability on uneven terrain. 100% waterproof Premium rubber over insulating neoprene for durability and waterproof protection 8'' suede and abrasion-resistant nylon uppers 1200 gram Thinsulate Ultra Insulation Molded polyurethane footbed for comfort Thick EVA midsole for added insulation and shock absorption Multi-directional non-loading lugs for stability on uneven ground