Select Size to see the return policy for the item.Outer:61% high waterproof nylon, 32% polyester, 7% elastane Interlayer: high performance lightweight function of waterproof and breathable membrane Lining: 66% coolmax, 30% polyester,4% elastane.Imported.With fine feet fit and superb warmth retention, these waterproof socks can be used in daily life or on business trips, which can keep your feet and comfy in cold and damp environments.Machine Wash.ABOUT SIZE: Small fits for US men 7-9 and US women 8-10.5 Medium fits for US men 9.5-12 and US women 11-13 Large fits for US men 12.5-14.5 and US women 13.5-15.5. Take note that our Waterproof Socks with a Three-Layer Construction might be A Little Thick to stuff into some shoes. Please match with Loose Fit Shoes. Each pair of our waterproof socks is packed in individual delicate draw string bag, best holiday and birthday gifts for family, lover and friends who like outdoor activities.WATERPROOF&BREATHABLE: Our socks handily solve the contradiction between waterproofing and breathing property.High quality nylon makes our socks more durable and sturdier. 100% Waterproof and breathable membrane effectively prevent moisture penetrating into our lining area and creating a perfect breathability for our socks. Coolmax inner has a good moisture conductivity, rapidly wicking perspiration away from our skins and offering a and soft feeling to our feet.PERFORMANCE: Padded heel, toe and footbed offer amazing shock absorption and guard against pressure and friction. Elastic cuff would never strangle your feet and efficiently prevents your socks sliding into your boots and shoes. The Y-heel can completely cover the heel, providing extra secure and comfort for our feet. Smooth seamless toe avoids yarn chaffing and irritation, reducing abrasion and eliminating blisters on the toes.