- Nylon- Imported- Tumble Dry, Machine Wash, Do Not Iron, Hand Wash- NOTE & SIZE: Take note that our Waterproof Breathable Skiing Socks with a Three-Layer Construction might be A Little Thick to stuff into some shoes. Please match with Loose Fit Shoes. FOUR SIZES (UNISEX): Small (US 4-6); Medium (US 6.5-9); Large (US 9.5-12); X-Large(US12.5-14.5). Refer to the images on the left for more detailed size information.- MATERIAL: 3 layers, durable nylon, breathable and waterproof membrane, moisture-wicking Coolmax. 100% water resistant.- Trail Tested: Made of 100% high-tech material, the seamless, moisture-wicking socks are not only thermal and windproof but also wear-resistant and lightweight.- APPLICATION: hiking, backpacking, trekking, camping, trail running, fishing, mountain biking, hunting, skiing, snowboarding, ing, and other outdoor sports and activities. Fit for most people, men, women, and young, wear it to do most water-related activities.- WASH & CARE: Machine Wash and the water temperature should be below 40°C/ 104°F; Hand wash under normal temperature. Tumble dry below 60°C/ 140°F. Do not iron or dry clean. No distortion or color fading after multiple items of washing.