1000 Mile Men's All Terrain Sock Granite Durable & functional with superior fit & comfort. Innovative design & material technology. Double layer construction Moisture wicking inner Tactel layer. Moisture absorbing Merino Wool-mix outer layer. No blisters and no wear-out The unique combination of fibres maintains a comfortable temperature for the foot. Fitted heel for better grip Arch bracing for custom fit and support. Air flow channels for superior breathability. Flat toe seam for added comfort Material inner: 100% Tactel. Material outer: 45% Merino Wool, 42% Cotton, 12% Nylon, 1% Elastane Lycra. Made in England