PowerSox Men's 3-Pack Powerlites Low Cut Socks with Moisture Control 68% Polyester, 27% Acrylic, 3% Nylon, 2% Spandex Imported Pull On closure Machine Wash Strike Zone Cushioning Provides Maximum Shock Absorption in the Heel and Ball Strike Zones Y-Heel and Comfort Toe Seam AquaFX technology. Cool. Dry. Comfort. Mesh Ventilation and Arch Support