Dryshod Arctic Storm Extreme-Cold Conditions Winter Boots have a total of 12mm of insulated warmth and protection for the coldest days. These Dryshod insulated boots are 100% waterproof, with 5.5mm Densoprene foam insulation with 2mm airmesh lining and 2mm warm fleece. They're made of genuine, hand-laid natural rubber (no PVC, PU, or TPR) and have extra rubber reinforcements in the toes and heels. A comfort range of -50°F to 65°F takes you through the coldest seasons. 4-way stretch construction and air mesh lining keep feet dry. Roll-down calf pipes let you tuck in your pants or vent your legs. The work boots feature nylon shanks, molded outsoles for outstanding traction, cold-blocking EVA midsoles, and removable EVA sockliners. Dryshod Arctic Storm Extreme-Cold Conditions Winter Boots for Men are ideal for outdoor work in the mud, muck, snow, and slush. Imported.