1000 Mile Fusion Walking Sock Charcoal Durable and functional with superior fit & comfort. Innovative 3 / 4 season design & material technology Unique double layer construction. No blisters & no wear-out. Comfortable temperature for the foot Moisture wicking inner Tactel layer. Moisture absorbing Merino Wool-mix outer layer Fully padded Achilles Tendon protection. Arch bracing for custom fit & support. Extra padding for toe, ball & heel zones Material inner: 100% Tactel fabric. Material outer: 40% Merino Wool, 29% Nylon, 23% Polyester, 6% Cotton, 2% Lycra. Made in EU