Kamik - Patriot (Black) - Men's: 9" high boot. Full grain leather upper. Seal sealed waterproof construction specially treated leather and upper materials. From the inside to keep water from entering membranes, waterproof tapes or sealants are applied to all seamed areas. 400B Ultra Thinsulate thermal insulation which is lightweight, breathable and moisture-resistant. Antibacterial comfort lining is safe, effective, durable and always maintains a hostile environment for odor-causing bacterial growth. Gusset tongue. Mid-foot lace lock. Rustproof hardware. Removable footbed with antibacterial lining. Airstrip shock absorbing EVA molded midsole is part of Kamik's "dual density" molding technology which acts as a shock absorber to the body. The Airstrip layer is light and air-injected for cushioning. Triumph rubber outsole. Temperature rated: -40F/-40C.