PRODUCT INFORMATION Sock size 10-13 made to fit men's shoe sizes 6-12 Signature X-Dri fabric helps wick moisture away and dries quickly Flat knit construction to help reduce chafing and irritation Quarter crew design covers the ankle with a stay-up cuff for easy all-day wear Package includes 6 pairs of men's performance quarter socks Tech Specs - FABRIC: 98% Polyester / 2% Spandex. CARE: Machine wash cold with like colors, tumble dry low, do not iron.