Style No: N-2017010 Material: 37% Coolmax, 27% Cotton, 23% Polyester, 3% Elastane. Size: 39-41 ( sole: 22cm, could stretch up to 30cm comfortably.) Features: Coolmax is a proprietary blend of fibers designed to wick moisture away from the skin, give this unique running sock a quick-drying performance, 100% seamless perfect fit on the feet. Three Street Running Socks feature metatarsal compression in the mid-foot region and fit like a glove for ultimate comfort. Three Street Running Socks are the perfect all-rounders and can be worn for all performance sports including running, golf, football, and more. Unique compression Technology: increases circulation and targeted compression on the mid-foot help prevent foot swelling that can emerge after a few hours of activity. Wholesale and Bulk Order available.