MATERIAL - 65% Coolmax Polyester, 23% Spandex, 12% Elastane SIZE - Large fit Men's Shoe Size 8-12, X-Large fit Men's Shoe Size 11.5-15 NON-CONSTRICTING DESIGN - Non-binding cuff without sagging, Minimal compression so as not to restrict circulation.Very loose knit construction with super stretch offers maximum blood flow, enhancing fit and comfort