Get the support and comfort your feet need every time you slip on the Feetures! Cushion crew socks. With iWick fibers wicking moisture and mesh construction on the top of the sock, these Feetures! Crew socks keep your feet cool, dry and comfortable. For unbeatable comfort, the Feetures! High Performance Light Cushion Crew Sock comes with The Perfect Toe(R) and high-density cushioning in high-impact areas for added cushion and protection. FEATURES: Power bands of Lycra deliver maximum support with a form-fitting quality Snug fit reduces movement, which helps reduce blisters High-density cushioning delivers added protection and cushion in high-impact areas iWick fibers wick moisture to keep your feet cool, dry and comfortable Mesh construction on top of the sock maximizes ventilation and breathability Y-heel construction keeps the sock in place The Perfect Toe(R) comes without an irritating toe seam for added comfort Fabric: 74% iWick Polyester, 23% Nylon, 3% Lycra Spandex Style: FA10001, FA10002, FA10003, FA10004 Feetures! SIZE CHART: Sock Size: Small = Shoe Size: Women's 4-6.5 Sock Size: Medium = Shoe Size: Men's 6-8.5, Women's 7-9.5 Sock Size: Large = Shoe Size: Men's 9-12, Women's 10-13 Sock Size: X Large = Shoe Size: Men's 12-15.5