The CS6 Calf Sleeve offers a comfortable and easy-to-wear alternative to tight, binding compression stockings. Compression Zone Technology uses specific graduated compression to encourage efficient blood flow & oxygen return, providing relief from common conditions life venous insufficiency & edema. It also provides medical grade support for the achilles tendon and calf muscles, relieving shin splints, cramping & achilles tendonitis. Fits easily under your normal socks & clothing. Sold as a pair. Available in black.