Swiftwick- PURSUIT ONE | Socks Built for Running & Golf | Merino Wool, Comfortable Compression Ankle Socks 3" high 5" wide Material: [toe and heel] loop terry, merino wool; [arch] merino wool; [footbed] loop terry, merino wool; [upper] merino woolHeight: above ankleRecommended Use: cyclingManufacturer Warranty: lifetime