This is the pain-relieving nylon/cotton pad that helps soothe aching muscles and boost circulation using far-infrared rays emanating from heated jade stones. Trusted in China for medical treatment since the Neolithic Era, jade is a superior conductor of far-infrared rays, a safe, invisible energy that penetrates far deeper below the skin’s surface than a traditional heating pad. This enables the warmth to reach the source of a stiff back or sore shoulder and help relieve the pain naturally, without medication. The 60 smooth stones lie flat and comfortably against the body and are heated with the tethered controller to six settings ranging from 86° F to 114° F. An hour’s treatment produces long-lasting effects, and a panelist at the Hammacher Schlemmer Institute described the pad as “great for use at your desk or while watching TV after a workout.” Plugs into AC with 12' cord. 20" L x 14" W x 1/2" D. (3 lbs.)