Derived from the widespread graduated compression stockings used in sports, they use the same principle of compression therapy and have a particular characteristic: they exert maximum pressure at the ankle that decreases as it rises towards the thigh, thus encouraging the blood to rise. The compression force is obtained by the quantity of millimeters of mercury (mmHg), the quantity of elastic, and the yarn count used to manufacture the structure of the stocking itself. It is important to know that in international case studies for this type of garment, elastic stockings that exert a pressure of less than 6 mmHg at the ankle are "normal" stockings, only more elastic, but without any additional properties; while items that have a compression force at the ankle between 6 and 20 mmHg can be defined as therapeutic stockings. Sparco COMPRESSION stockings are effective in preventing the development of circulatory problems and extremely effective in alleviating the sensation of heaviness and fatigue in the legs.