Sealskinz Stanfield Waterproof Extreme Cold Weather Mid Length Sock OliveThe Sealskinz Stanfield Waterproof Extreme Cold Weather Mid Length Sock in Olive is engineered for performance in freezing temperatures. With a waterproof and breathable Aquasealz membrane, durable nylon exterior, and a soft merino wool blend lining, it keeps feet dry, warm, and comfortable in the most demanding conditions. PRODUCT FEATURES Heavyweight, waterproof mid length design for extreme cold Durable nylon outer with 4 way stretch for a secure