The Sealskinz Starston Sock is a 100% waterproof, windproof, and breathable mid-length sock designed for cold weather conditions. Its inner lining is crafted from fine Merino Wool, providing excellent insulation and temperature regulation. These socks are ideal for outdoor activities in wet and cold environments, offering protection against numbness, blisters, and frostbite. The construction involves bonding three layers to create a highly waterproof and breathable fabric: an outer layer of 90% Nylon and 10% Elastane, a middle Aquasealz waterproof membrane, and an inner layer composed of 35% Merino Wool, 35% Acrylic, 23% Polyester, 3.5% Nylon, and 3.5% Elastane. Previously known as the Unisex Waterproof Cold Weather Mid Length Sock.