The Fringe Red Light Therapy Multi Joint Wrap - Knee, Ankle, Elbow combines light wavelengths of red light (660nm) and infrared light (850nm) and an optional vibration massage setting. Wrap your knees, ankles or elbows for targeted cellular-healing, as well as pain and inflammation reduction. This ergonomic, wireless and versatile therapy wrap contains 270 hard working Led light chips and 4 optional vibration massage areas to provide convenient, comfy, warm, massaging light therapy.Safe, effective, science-backed, affordable light therapy. The perfect warm, healing, massage-y recovery tool for your worthy joints.