Super Large Size: Heating pad measures 12" x 24" to cover larger areas that need relief, including the spine, legs, and across the shoulders; also features an extra long 10-foot power cord, o you can comfortably lounge on the couch or relax in bed. 6 Temperature Settings for Your Needs: you can control the temperature of this electric heating pad via the controller, it can adjust the temperature easily with 6 temperature setting to accommodate your comfort level.This large auto shut off heating pad for back pain can heat in seconds with fast heating technology to provide fast pain relief to aching muscles. 4 Timer Settings: this large moist heating pad with timer function provides 4 timer auto shut off range from 30 to 120min,conserves energy and prevents burns caused by excessive heating which is very safe and energy saving