The mens Arctic Storm Hi boots by Dryshod are built for extreme conditions with a DS1 molded outsole for grip and seven layers of protection, including an EVA cold-blocking midsole. They provide 11mm of insulating warmth with DENSOPRENE XD foam, airmesh, and fleece lining. Additional features include a removable molded EVA sockliner, double Achilles heel and instep reinforcement, and a nylon shank. Average calf circumference is 17 inches, height is 16.3 inches, and weight is 4.9 lbs.