- Color: 2 Pairs-yellow blue- SIZE: X-small (US Men: 5-7, US Women: 6-8); Small (US Men: 7.5-9.5, US Women: 8.5-11), Medium (US Men: 10-12.5, US Women: 11.5-13.5), Large (US Men: 13-15). Refer to size chart for more information. - WATERPROOF & BREATHABLE: 100% waterproof lightweight membrane doesn't let the external water molecules enter the socks. RANDY SUN waterproof socks are designed with breathable membrane and COOLMAX fabric to wick sweat away from your skin, thus keeping feet cool and dry during sports and exercise.- PERFORMANCE COMFORT FIT: Smooth toe seam eliminates bulky seams to reduce abrasion and provide extra blister protection. Deep heel cup style with full wrap let your socks not slip into boots or shoes.Ultra-light cushion sole provides comfort and great fit. Non slip ribbed top keeps the sock stay in place.- OCCASION: Made of 100% high-tech material, the seamless, moisture-wicking socks are not only thermal and windproof, but also wear resistant and lightweight. These waterproof socks are especially applicable for hiking, backpacking, trekking, camping, trail running, fishing, mountain biking, hunting, skiing, snowboard and other outdoor sports and activities, even in various harsh environments. Best Christmas/Birthday/ Anniversary gifts for your friends and family.- MATERIAL: Outer - 61% high waterproof nylon, 32% polyester, 7% elastane; Interlayer - a high performance lightweight function of waterpro