These high-tech socks are light on weight and heavy on performance. CoolMax?? fibers and Wick Dry?? technology combine to keep feet cool and dry. Memory-knit construction. Contoured rib top holds sock in place. Spandex compression zones add support and keep sock in place. Vented panels remove moisture. Cushioned and reinforced sole for comfort and durability. 65% CoolMax polyester, 33% nylon, 2% spandex. Lightweight.