The Clix Therapy heat pad is designed to relieve muscle aches and sore joints. The heat pad is made of soft, flexible material that can be placed directly on the skin. It is easy to use and can be used for both heat and cold therapy. The heat pad can be used for the back, neck, shoulders, knees, ankles and elbows. The heat pad is made of a safe and durable material and can be used over and over.