Soothe your painful, aching knee with infrared technology. Reduce swelling, pain and muscle spasms with this Far Infrared Knee Support. Its specially treated fabric absorbs body heat and reflects it back into your knee to help ease pain and speed healing. Intricately knit material gives support while allowing you to bend, sit and walk with ease. Slips on and stays in place all day. Washable. One Size Fits All.