Durable material wicks sweat & dries really fast New Locked-In Fit design keeps sock securely on heel for an adjustment-free fit Medium cushioning throughout foot for comfort & protection Mesh panels on top of foot for added breathability Built-in arch support helps reduce foot fatigue Style #: 1379515 3 pairs of socks 98% Polyester/2% Elastane Imported Imported Material & Care Polyester Machine washable