Men's Muck Boots Arctic Sport II Tall Work Shoes The Arctic Sport II Tall boots are designed for women who love the outdoors, even in the coldest conditions. These boots step up the warmth factor with cozy fleece lining and a 5mm neoprene inner boot for ultimate warmth in conditions as low as minus 40 degrees. The stretch-fit top-line binding keeps the boots snug to your legs to keep cold air out and warm air in. An EVA molded midsole offers support and the rugged outsole helps grip. Whether you're walking the dog or out about town, these high-performance winter sport boots will keep your feet comfortable in frosty temperatures whilst remaining stylish; ideal for outdoor enthusiasts!