The Arctic Adventure winter boot is a welly with a difference. Designed to keep even the most experienced explorer's feet warm in extreme temperatures. 100% Waterproof, 100% MUCKPROOF 5mm Neoprene bootie for comfort and performance Warm lining: soft, insulation, light-weight, performance materials for warmth and comfort Tall slimming look Additional achilles reinforcement for added protection Lightweight midsole for all day comfort and support Light gripping rubber outsole Muck Boots Women's Arctic Adventure Wellington in Navy Size: 4