Sierra Socks Nylon Ankle Brace (1) Compression 26-34 mmHg Support Made in USA 75% Nylon, 25% Spandex Made in USA Machine wash, warm with like colors. Non chlorine bleach. Tumble dry low. Helps relieve symptoms of Arthritis such as pain and inflammation. Contoured to fit ankle w/o binding or slipping while providing support for prolonged use. Closed heel for proper fit & seamless design for firm, comfortable, even compression. Thin lightweight material fits comfortably in shoe with smooth edges for comfortable everyday multi purpose use. MEASURE ANKLE CIRCUMFERENCE FOR SIZING. PROUDLY MADE IN THE USA.