FootSmart Men's Microfiber Nylon Firm Support Over-the-Calf Socks Medical-grade graduated support sock provides a firm level of support (20-25mm/HG at ankle) Graduated support applies pressure at the ankle, slowly decreasing it up the leg, stimulating circulation Sock ensures a secure fit without binding; Reinforced heel and toe ensure longer wear Helps relieve: Circulation, DVT, Economy Class Syndrome, Edema, Heaviness in Legs, Leg Pain, Leg Veins, Spider Veins, Swollen Ankles, Swollen Feet and Legs, Tired, Aching Feet, Varicose Veins, Venous Insufficiency