78 % Combed Cotton / 14%Polyester / 8% Lycra Men & women no show socks lot pack: 5 Pairs Socks per Pack; U.S. Size: 6-11. Suitable for foot length 8.86???-11.31???. Ideal No show socks for sports shoes and most casual shoes, but not for very low-cut shoes. SELECTED MATERIAL: (1) Combed cotton ? soft and comfortable. (2) High tech synthetic fabric ? durable, long lasting, and will not stretch after washing. (3) Good quality Lycra ? great elastic. FEATURES: (1) Eight silicon strips at heel ? prevent slipping in shoes. (2) Mesh knitting tech? breathable and sweat wicking. (3) Medium thickness reinforced toe and heel – enhanced durability in high-wear areas. (4) Smooth toe stitching – Comfort toe seam. CARE INSTRUCTION: Hand or machine wash in cool water; Air dry to reduce shrinkage; Do not bleach; Do not iron. PLEASANT BREEZE IS THE MANUFACTURER, our customer service will always be there, no matter what problem you have with our products, you can always contact us.