Our Mars Wellness PVC heating pad with soft touch polyester cloth cover. Never use a dry heating pad for more than thirty minutes at a time. Heat therapy can be very beneficial if used correctly. Ideal for a variety of problems ranging from chronic lower back pain to stiff muscles. Heating therapy products are often preferred over more invasive types of treatment. They are also used to supplement other types of pain treatments. Power Supply 50W, 120V AC - Power cord length: 9 ft. Materials - Polyester fabric cover removable and machine washable