Built with Seamless Construction these insulated work boots use a single seamless shell to eliminate failure points, prevent cracking and reduce the boots' weight by 30%. Rebound cushioning returns energy to your foot keep you moving all day. Height: 13.5". Circumference: 15". Made with Seamless Construction to prevent cracking and reduce the boots' weight by 30%. Constructed with 7.5MM Neo-Tech waterproof insulation. BioGrip slip resistant outsole. Rebound cushioning bounces back to return energy to your foot. Flex Width insole system adapts to wider feet. Eco-friendly, algae-based EVA footbed that helps clean polluted water habitats. DuraFresh bio-technology activates to fight odors. Bogs Max-Wick moves sweat away from your foot to keep you dry. Heel lock provide support and optimal ankle fit. Comfort rated to -72?F/-60?C. Meets ASTM F1677, F2413-11, M I/75, C/75. EH Rated.