【4-In-1 Heating Pad】In order to meet the needs of customers, we have upgraded the shape of the heated blanket. One heating pad can meet the heating needs of the shoulders, waist, abdomen, feet and other body parts. The heating pad for back pain relief also comes with an adjustable waist belt that can fit customers of different body types. Let the large heating pads keep you warm and comfortable this cold winter.【Fast Heating】Compared with the traditional alloy heating wire on the market, we have upgraded the heating pads for cramps to carbon fiber heating technology, which conducts heat energy to the target area, with stronger penetration and faster conduction, so as to promote the effect of blood circulation, pain relief and muscle relaxation.【6-speed temperature & timing】 The back pain relief products controller has UL certification, and you can easily adjust to a comfortable temperature through the LED display on the controller. 6-level temperature design (104/112/119/126/133/140⁰F) to meet the soothing needs of different joints and muscles. The 4-speed timing design (1/2/4/8hours) allows you to safely enjoy the warmth brought by the leg warmers without worrying about the potential danger after falling asleep.【3-layer safety protection】The heating wire of the electric heating pad adopts a 3-layer protection mechanism, NTC overheating protection system, PTC temperature monitoring system and PVC insulation layer, which can effectively prevent the risk of scalding caused by excessive temperature. The S-shaped dense heating line layout makes the heating pad for neck and shoulders evenly heat.【Best Christmas Gifts】This 23.6*11.8 inch portable electric heating pad is lightweight and foldable to carry. Whether at home or outside, you can enjoy it anytime, anywhere. High-quality flannel, super soft and skin-friendly, can better lock in temperature. It can be easily stored after machine washing when not in use. It will be the best birthday gifts for women, friend and elder.