100% Waterproof - 5mm DENSOPRENE Foam Insulated Bootie - Hydrokote Water-Repellent so water rolls off and dries in seconds - 4-way stretch breathable airmesh lining - Roll-down calf pipe - Genuine natural-rubber overlays - Solid rubber long-wearing oil-resistant outsole for traction and durability - Steel toe meets ASTM F2413-11 M 1/75 C/75 EH - Meets ASTM-471 for oil resistance - Meets ASTM F-1677 for slip resistance - Rigid triple-layer toe and heel reinforcement for comfort and protection - Removable molded EVA sockliner - Steel shank for added arch support - Adjustable Gusset for added room through the calves - Comfort Range from -20Adeg to 75AdegF