The Running sock is a flat knit (no cushion) midweight sock designed for all running activities. Features the perfect combination of moisture management and friction-free control. This sock provides all the protection you need without shoe sizing issues. Content: Inner Layer: 70% Dri-WRIGHT™ polyester, 30% Nylon; Outer Layer: 68% Dri-WRIGHT™ polyester, 28% Nylon, 4% Lycra® |