Pain Relief & Warm Extra large 12" x 24" heating pad use double spiral heating wires, 2.0cm copper coil spacing(others are 2.2-2.5cm), densely distributed, uniform heating which provides heat to relieve cumulative fatigue and stiffness.suitable for cold womb,cold weather,shoulders, back, neck, legs, knees pain. .6 Heat Levels & 4 Auto-Off TimersOur heating pad has a digital LED controller that provides 6 heat settings (36.6C-60C) allowing you to choose a comfortable temperature and 4 timers auto-off range from 0.5H, 1H, 1.5H, 2H to avoide excessive heating and energy waste. .The Auto-Shut Off Overheat Protection TechnologyIf you forget to set the timer, it'll automatically turn off after 2 hours. The LED indicator will decrease by one level every 30 minutes. When the indicator light on the timer goes out, the heating pad will also be turned off to keep you safe.Prevent low-temperature burns.Soft Fabric & WashableMicroplush and polyester is the most comfortable fabric for heating pad, Microplush makes it soft and warm inside and out and retains heat better than any other fabric.And it's easy to clean, just detach the controller and put into the machine. TipsNo tumble drying.Service There are two ways to use the heating pad--moist or dry heat therapy.You can use the relaxation method that your needs.High quality electric heating pad has 1Year Service & Lifetime Support,please rest assured to buy if you have any questions, please contact us. .