The lightest, most comfortable, longest lasting boot out there. The seamless construction on the Kiesau makes them 30% lighter and more durable. 100% waterproof, and guaranteed to keep you warm in whatever conditions you face (comfort rated from temperate to -72°F). Also features Bogs Max-Wick to move sweat away from your foot and keep you dry, and DuraFresh bio-technology that activates to fight unwanted odors. Men's Kiesau Composite Toe Boot