Built to get you through the coldest winters, the Men’s Arctic Excursion by The Original Muck Boot Company® delivers optimal comfort and warmth. The inner etc® sockliner reduces friction, while an ankle-cut top allows for improved range of motion and flexibility. Warm fleece lining and a thermal foam underlay in the instep maximizes heat, and the slip-resistant rubber outsole adds protection and durable traction. FEATURES: Ankle-cut top height allows for flexibility and easy-on and off Inner fleece lining to help retain heat for comfort Full-rubber exterior to keep your feet dry and insulated 5mm CR flex-foam insulation provides optimal warmth in extreme conditions ect® sockliner lining reduces friction and heat build-up Lightweight EVA midsole with contoured footbed Rubber outsole features EVA material and pod construction Slip-resistant outsole is rugged, aggressive and durable Comfort Range: -40°F to 40°F