Firm support to promote better circulation and relieve fatigue due to medical aliments. The top is on binding comport. Firm compression at the ankle gradually decreases towards the calf to promote circulation. The heel and toe are non-restricting for superior fit and comfort. Firm compression to support the arch with a compression range of 20-30 mmHg. Clinically proven and physician recommended to relieve tired, aching and swollen legs, often symptoms of varicose veins. Superior "stay up" performance. Instructions for best way to put them on included. Made in the USA. Value pack of 2 support OTC compression socks. 80% Nylon 20% Spandex. Made in the USA. Medically proven graduated compression. Compression range 20-30 mmHg.