The Wolverine Men's Crawford EH Steel Toe Wellington Work Boots are waterproof, slip resistant and EH rated for thorough protection at work. The full-grain leather uppers fit comfortably with the mesh lining and removable, full-cushion insoles. For durability, the outsoles are made of rubber and polyurethane, and the midsoles are made of polyurethane with integrated protective toe caps for added safety. The lightweight nylon shanks help prevent fatigue.