FLA Therall - Joint Warming Knee Support/Wrap provides soothing relief for joint, muscle, and arthritis pain. The unique four-way stretch material offers light compression support to counteract swelling. The ceramic fibers in the knee support insulate the affected area by retaining heat, which reflects back into the joint and surrounding tissues. The heat soaks deep into the aching joints, muscles and tissues. Works well for knee injuries or arthritis therapy.