The most rugged conditions won't slow down Carhartts 6-inch blucher work boot (brown)/safety toe. Featuring an oil-, chemical- and slip-resistant sole, it's constructed of oil-tanned leather with a waterproof membrane. An OrthoLite insole, padded collar and an OrthoLite comfort tongue add comfort, while a molded TPU (thermoplastic polyurethane) heel counter with an achilles flex joint provide stability. The boot also features the durability of an EVA (ethylene vinyl acetate) midsole and Vibram rubber outsole. Built with a composite safety toe, it is ASTM 2413-05, EH rated.