The copper compression leg sleeves feature copper infused yarn to relieve muscle soreness and stiffness. The compression in each calf sleeve provides support to the calf and shin area, helping to treat shin splints. A moisture wicking fabric stays light and dry. The copper sleeve feature ultra comfortable compression, meaning you will are able to wear them comfortably for hours and hours. The copper compression leg sleeves are great for athletes, those on their feet all day like nurses, and anyone who suffers from sore calves. The copper compression sleeves keep your legs feeling great all day. Who are compression leg sleeves with copper designed for? Runners – help treat shin splints, calf strains, calf cramping, and improve running endurance thanks to the copper leg sleeves graduated compression technology All Athletes – Whether using the leg sleeves for basketball, tennis, gymnastics, dance, hiking or any sport that involves running , athletes are able to benefit from better feeling legs Travelers – Frequent flyers have long used compression socks and compression stockings for travel to prevent swelling and relieve restless legs. The advantage of compression leg sleeves are that they are able to be worn with open toed shoes underneath jeans. Nurses – 12 hour shifts are very tiring. The compression in the leg sleeves helps to stimulate blood flow and reduce fatigue, allowing legs to feel energized. Sizing of the copper compression sleeve is based on calf size . Measure the circumference of your calf around the widest point with the muscle relaxed. Small - 9.5" - 13" Medium - 13" - 14.5" Large - 14.5"+