All-Day Support: With 15-20 mmHg of True Graduated Compression, Comrad Nylon Knee-High Compression Socks offer all-day comfort. These compression socks for men and women promote circulation and help prevent sock odor with SmartSilver technology. Black solid. 91% Nylon / 9% Spandex. Size: These unisex socks in size Medium fit a Women’s shoe size 8-10.5 and a Men’s 8.5-10, with a calf circumference of 12-14". If you’re between sizes, we recommend sizing up. What Makes Our Socks Special: True Graduated Compression improves leg and foot comfort with compression that is strongest at the ankle and gradually decreases up the leg to reduce swelling. Insanely Comfortable: Our moisture-wicking nylon fabric is super soft and breathable. The contoured design follows the natural shape of a leg. Premium yarn provides dynamic stretch, making socks easy to put on and take off. Ways to Use Comrad: Perfect for sitting or standing for long periods, like while working from home, on road trips, and flights. Use during exercise like running, cycling, and training, and for post-workout recovery. Ideal for comfort during pregnancy, working as a nurse, or for athletes. All-Day Support: With 15-20 mmHG of True Graduated Compression, Comrad Recycled Cotton Knee-High Compression Socks are great for long periods of sitting or standing, running, cycling, training, working from home, post-workout recovery, roadtrips, flights, and pregnancy. These comfortable compression socks for men and women have incredible health benefits with the comfort of a dress sock and support of an athletic sock. Size Small (fits a Women’s 4-6). Navy Solid.