Be prepared this winter with the protective and durable Bogs® Classic Ultra High. 100% Waterproof. Upper made from durable hand-lasted natural rubber laid over a four-way stretch inner bootie. It is constructed with 7mm Neo-Tech waterproof insulation. DuraFresh natural bio-technology activates to fight odors. Bogs Max-Wick evaporates sweat to keep feet dry. Easy pull-on handles. Internal midsole with rubber sponge delivers extra cushioning and warmth. Aegis contoured insole for added comfort and a fresh foot environment. Self-cleaning, BioGrip slip-resistant outsole. Oil resistance meets ASTM D471-16a standard. Comfort rated to -40°F/-40°C. Non-slip outsole.