UPGRADES: Solid ColorUPGRADES: Size : SMALL: Fit Women Shoe Size 6-8/Men Shoe Size 4.5-6.5 .MEDIUM: Fit Women Shoe Size 8.5-10.5 / Men Shoe Size 7-9. LARGE: Fit Women Shoe Size 11-14 /Men Shoe Size 9.5-12.5.Features : Moisture Wicking / Don't slide off /Arch support/CottonWash : Machine wash,tumble dry/Air dry,only non-chlorine bleach when needed,do not iron.We OFFER: We offer unlimited time replacement to all our customers UPGRADE TECHNOLOGY： · Socks made of high quality cotton material · This socks has silicon grip that close to the heel to effectively prevent.Not only does this grip hold the socks, it is also made out of soft gel that does not cause any discomfort on your heel. · Match for all your sneakers, boat shoes, loafers, etc. · This socks is very elastic and can fit most people. Seamless Toe These no show socks feature a ultra smooth toe for added softness that provides. unsurpassed comfort. Non-irritating toe provides a smooth, invisible feel that protects sensitive feet when wearing shoes. Easy to Wear More elastic fibers are added to the socks, which do not tighten the ankles, perfectly fit the feet, and are easy to put on and take off. Non-slip silicone Double-layer scratch-resistant silicone design, socks are not easy to fall off, making it easier for you to exercise