Pain Relief and Warmth3060cm (12" x 24") large size electric heating pad adopts double helix heating wire, copper coil spacing 2.0cm (others are 2.2-2.5cm), evenly distributed, dense heater provides warmth to Relieve accumulated fatigue and stiffness. Suitable for palace cold, cold, shoulders, neck, legs, knees. Auto-off overheating protection technologyBuilt-in rapid heating, which makes the electric heating pad heat up very fast. If you forget to set the timer, it will automatically turn off after 2 hours. The timer LED indicator will decrease by one step every 30 minutes. When the timer light turns off, for your safety, the heating pad also turns off. Avoid low heat burns 6 Heat Levels & 4 Auto Shutoff TimersOur heating pads feature LED digital controller that provides 6 heating settings 40C-60C (104F-140F) Allows you to choose a comfortable temperature and 4 automatic timers. Exceed the range of 0.5H, 1H, 1.5H, 2H to avoid excessive heating and energy waste. Damp and Dry Heat Therapy The heating pad can be used in two ways: damp heat therapy or dry heat therapy. The damp heat therapy provides deep penetration for more effective relief. Do not soak the heating pad, just spray a fine mist on the surface of the heating pad. Dry heat is better for relaxing muscles, while wet therapy is better for pain relief. Soft Removable and Washable Fabric Micro-plush and polyester are the most comfortable fabrics for heating pads, micro-plush makes it soft and warm inside and out, and retains heat better than any other fabric. And easy to clean, the heating pad is unplugged, hand or machine washable. Place in a washing machine below 40C to dry naturally.