Amazon.com | TerraTrax Men。Conquer the Cold, Mud, and Muck with WOVENPAK Boots. Sub-Zero Warmth: Built with heat-resistant insulation that traps body heat to keep your feet comfortable down to -4°F (-20°C). 100% Waterproof Armor: Engineered with a premium CR Flex-Foam construction and high-grade rubber exterior to seal out snow, mud, and water completely. Rock-Solid Stability: Deep-lugged, anti-slip soles deliver unbeatable traction on slick mud, wet rocks, and icy trails. Flexible Protection: Flexible neoprene sides move naturally with you while the clever rear buckle lets you tighten or release the fit instantly for perfect pants-tucking. Built for the farm, the field, and the deep winter woods. Gear up today. Brand Size Insole Length (in) Shaft Height (in) Boot Opening (in) 6 9.9 15 15.2 7 10.2 15 15.5 8 10.6 15 15.9 9 10.9 15 16.2 10 11.2 15 16.6 11 11.6 15 16.9 12 11.9 15 17.3 13 12.2 15 17.6 We are here to help you if you have any question regarding your order. We handle customer service as the most important task in our daily operation. Remember, we strive to keep all our customers satisfied.