RANDY SUN Men's and Women's Ankle and Waterproof & Breathable Socks100% WATERPROOF SOCKS: 3 Layers construction interlining with waterproof membrane designed for numerous outdoor activities to conquer the cold & wet weather, ingeniously solved contradiction between water proofing and air permeability.Abrasion resistant outer shell durable, dexterous and functional for trekking, hiking, mountain climbing, cycling, rain running, hunting, fishing, even through mud creek and river. No matter the conditions, it will keep your feet dry and comfortable.Size:the Extra Small size socks fit US men 5-7 and women 6-8;the Small size socks fit US men 7.5-9.5 and women 8.5-11;the Medium size socks fit US men 10-12.5 and women 11.5-13.5;the Large size socks fit US men 13-15 and women 14-16.WEIGHT: Each pair of the Ankle socks(Size M) weighs 3.17 ounces.MONEY BACK GUARANTEE: Best Products and Service!If our items do not perform to your satisfaction, return it to us within 30 DAYS along with your proof of purchase for a hassle-free full refund.Feel free to contact us via email with any comments and suggestions, or for any questions like sizes, delivery, discount, return or exchange items, etc.We will try our best to solve your problems and promise you a nice shopping experience.Wish you a good time shopping here!