Unisex; 2 Pair; 56% Ultraspun Polyester/41% Nylon/3% Lycra Spandex; Comfortable Seamless Toe; Temperature Regulating For Cool And Comfortable Feet; Breathable Mesh Ventilation Panels On Front Of Leg; Light Cushioning For Maximum Comfort Without Additional Bulk; Arch Support To Reduce Foot Fatigue; Size Medium Fits Shoe Sizes: 6-9.5; Size Large Fits Shoe Sizes: 10-10.5; Size XL Fits Shoe Sizes 11+; Color: Black And Gray; Style #2728 BLK