Sealskinz, the expert in waterproof accessories and socks, is a reliable choice. The inner material of these socks is very comfortable against the skin and contains about one-third merino wool, which helps reduce odors and regulate temperature fluctuations. The Surlingham socks are suitable for a wide range of outdoor and hiking activities. Thanks to the liner material, this model is great for cool conditions. - Durable outer material: 92% polyamide, 8% elastane - Aquasealz membrane inside: waterproof and breathable - Comfortable blended fabric lining: 36% Merino Wool, 36% Acrylic, 18% Polyester, 5% Nylon, 5% Elastane