Features of the Bogs Men's Foundation Leather Mid Waterproof CT Boot 100% waterproof Rebound cushioning bounces back to return energy to your foot Seamless heel Outsole construction for enhanced durability BioGrip Outsole combines ASTM standard slip and chemical resistance DuraFresh organic bio-Technology activates to fight unwanted odors Flex Width insole adapts to foot width Reinforced heel/toe for improved durability Asymetric composite toes that Are custom built for each size and meet ASTM standards