DURABLE COMFORT - Made with full-grain leather in Crazyhorse and Vibram 1275 Olympia Rubber outsole. INSULATED – 3M Thinsulate Insulation, the original thin insulation designed specifically for footwear. SHOCK ABSORPTION - Removable Ultimate Shock Absorption footbed provides ultra-comfort. WATERPROOF & SLIP-RESISITING - Waterproof barrier keeps water out. Footwear is tested for ASTM F3445-21 industry criteria for slip-resisting footwear. 1275 Olympia Rubber outsole is designed to withstand or reduce damage due to oil. EH RESISTANCE - these Iron River work boots meet ASTM F2413-18 or ASTM F2892-18 electrical hazard resistance safety standards