Athletic Compression Socks for Women and Men 3-Pairs. These compression socks are designed to promote circulation, minimize swelling, and assist in reducing fatigue during physical activities. They are suitable for a variety of sports including running, hiking, and climbing. The socks feature cushioning on the top of the foot to prevent abrasions while wearing shoes. Sizing: Medium (Sock Size 9-11/Shoe size 5-8), Large (Sock Size 10-13/Shoe size 8-11). Machine washable. Available in Viscose from Bamboo and Microfiber Nylon Fabric option.