Sports, any physical activities related to long running, jumping, walking or standing cause additional pressure in leg veins. Specifically developed medical compression socks Active not only apply an accurately measured pressure on the leg (graduated compression), thus protecting veins in conditions of increased variable pressure, but also stimulate faster outflow of blood and metabolism products from muscles, the special weaving improves retention of the Achilles tendon and calf muscles promoting their restoration during stress, as well as reduces micro traumatisation caused by vibrations.