Features Oil-tanned leather Carstrong® durable reinforced fabric prevents wear and tear Storm Defender® waterproof breathable membrane keeps feet dry, but lets them breathe FastDry® lining wicks sweat and fights odors TPU heel guard with Achilles flex joint for ankle stability and side impact protection Cushioned, polyurethane insole to absorb shock Direct welt-constructed, dual-density polyurethane outsole Secondary protection against incidental contact with electrical circuits of 18,000 volts or less under dry conditions; Meets ASTM F2892-18 EH standards