3 Heat Levels: The weighted heating pad for back pain relief features 3 adjustable heat levels-- low, mid, and high, which are easy to control. The electric heating pads also offers moist heat therapy, just spray a little water on the surface of it, then you can enjoy a more penetrating heat therapy. 2H Auto-off: This moist heated pad is equipped with 2h auto-off to remind you a round of heat therapy is finished, and 2h is a period that can meet the basic needs of human heat therapy. Besides, auto shut off heating pad for neck and shoulder can help you conserve energy and prevents overheating. Stay on Function: The heating pads for cramps features an extra stay-on function to meet long-time using needs. Just hold on the button for 3s to enter/cancel stay on mode, it will offer you constant heat, which can help you enjoy heat therapy all the time until you turn it off. Soft Flannel & Machine Washable: The washable large heat pad is made with a premium quality flannel which is super soft to touch your skin and provides maximum comfort for your full body. In addition, it's easy to clean, just detach the controller and then wash it by hand or machine (Note: Do not tumble dry). Color: Blue