The original, 100% waterproof, windproof & breathable mid length sock. The inner lining is crafted from fine Merino Wool to insulate and regulate temperature. Our unique hydrophilic membrane pulls moisture away from your skin, keeping you dry and cool. With a Hydrostatic Head of >20,000mm, these socks stay waterproof even in tough conditions. Available in stylish colors: Black/Grey, Grey, Black/Navy Blue, and Grey/Red. Made with premium materials and bonded layers, these socks are highly waterproof and breathable: Outer Layer - 90% Nylon, 10% Elastane; Middle Layer - 100% Hydrophilic Membrane; Inner Layer - 35% Merino Wool, 35% Acrylic, 23% Polyester, 3.5% Nylon, 3.5% Elastane. Machine wash at 40ºC/105ºF, low tumble dry or drip dry. No need for special detergents, line drying, or re-waterproofing. Extra Product Details: 100% waterproof, windproof & breathable for ultimate protection. Insulated with fine Merino Wool for temperature regulation. Unique hydrophilic membrane keeps you dry and cool. Withstands tough conditions with Hydrostatic Head of >20,000mm. Premium materials and three-layer construction for durability. Available in stylish color options. Easy care - toss in the wash with your gear. No need to re-waterproof, saving time and effort.