Premium full grain waterproof leather 2.2 MM11" square toe harness designInterior zipper for easy on/offSlip resistant, oil resistant outsoleMoisture wicking anti-bacterial liningClimate control cushioned insoleNon-marking, non-skid sole is oil and heat resistant WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov This warning is being provided to comply with the State of California's Proposition 65.