Thermophore Arthritis Pad Type: Medium/Joint Size (14"x14") - 1 ea. 14 x 14 in. Soothing pain relief. Moist heat. Hands free. Automatic shut-off. Therapy switch. Perfect size for shoulder, elbow or knee. Intense moist heat for fast relief. No water needed. Advanced therapy switch with automatic 20-minute timer. Advanced technology! Simply apply the pad to your joint pain and press the on button. The control switch takes care of the pain from there. You relax as the system cycles through a 20-minute optimal moist heat therapy session. Arthritic and rheumatic pain is temporarily relieved with the use of moist heat. The increased blood flow can relieve inflamed joints and maintain flexibility. Moist heat can temporarily relieve muscle pain caused by over-exertion, stress and strain. Moist heat relaxes muscle spasms. No water is needed. This pad produces its own moisture using the humidity in the air. There is nothing to boil...