Georgia Boot Carbo Tec Composite Toe Waterproof Pull-On Work Boots features goodyear welt construction, Georgia waterproof system, non-metallic, comfort Core insole, full-grain leather upper, ASTM F2413 I/75 C/75 Protective Toe classification, ASTM F2413 Electrical Hazard standard, nylon shank, oil- and slip-resistant rubber Carbo-Tec outsole and high performance mesh lining. Material: Leather.