Sealskinz Stanfield Waterproof Extreme Cold Weather Mid Length Sock BlackThe Sealskinz Stanfield Waterproof Extreme Cold Weather Mid Length Sock in Black is designed for the toughest winter conditions. Fully waterproof and insulated, it combines a durable outer layer with a soft, warm interior to keep your feet dry and comfortable during outdoor adventures in freezing temperatures. PRODUCT FEATURES Heavyweight mid length sock offering protection in extreme cold Durable outer layer made from 90% nylon and 10% elastane for