Work Boots Toe Type Steel Metatarsal Guard Internal Insulated No Men's Size 4 Waterproof No Lace Up Height 8 In. Black Upper Material Full Grain Leather Liner Material Taibrelle Nylon 66 Shank Material Steel Midsole Material Polyurethane Outsole Material Vibram Rubber Outsole Footwear Sole Pattern Cleated Resists Oil Acid Water Slip Standards ASTM F2413 CSA Z195 1 Pair