Feetures High Performance Light Cushion No Show Tab Relfector Polyester Power bands of Lycra hug your entire foot for maximum support. This snug, supportive fit eliminates movement to prevent blisters. High density cushioning provides extra protection in high impact areas. iWick fibers wick moisture to keep feet cool and dry. Mesh construction on top of the sock provides ventilation for added breathe-ability. 74% iWick Polyester, 23% Nylon, 3% Lycra Spandex