The Rugged Flex name describes this tough Carhartt work boot perfectly. Rugged durability engineered with materials and components to work as hard as you do. The 8″ height, Oil Tanned Leather, Storm Defender waterproof membrane and 400g 3M Thinsulate insulation all work together to keep you safe and dry. Cement constructed with Carhartt rubber Rugged Flex outsole and five layers of cushion keep you comfortable all day. Composite safety toe is ASTM 2413-11 EH Rated.