Brand: Randy Sun Color: Black 100% Waterproof Breathable: Three-Layer Knitting Construction. Outer Layer: 61% Nylon, 32% Polyester, 7% Elastane. Durable, Flexible. Middle Layer: 100% Waterproof And Breathable Membrane. Inner Layer: 66% Coolmax, 30% Polyester, 4% Elastane. Moisture-Wicking, Anti-Odor. Waterproof and breathable membrane not only prevent the external water molecules from entering the socks but also drain water out by COOL MAX CORE technology. These seamless, stylish waterproof-breathable socks will effectively keep your feet dry while going through stream, shallow water, muddy terrain. Ultra-light cushion sole provides great comfort and fit, keeping your feet cool and dry during walking, running, cycling or gardening. Perfect for outdoor activities like trekking, hiking, climbing, mountain biking, fishing, hunting, also perfect for many snow and water sports.