6X Deeper Pain Relief Effect: The upgraded neck shoulder heating pad is 6 times more effective than an ordinary heating pad. It uses a graphene lining and a double-layer carbon fiber heating wire. Graphene has good thermal conductivity, and the carbon fiber double-layer heating wire can release human-like infrared rays. The two are superimposed to achieve an effect of more than 6 times, and the heat energy penetrates the subcutaneous tissue to reach every deep muscle. Long-term use can relieve chronic pain caused by long-term head-down work or housework 30s Fast Heating: The neck heating pad incorporates fast heating technology. The high power can achieve rapid heating. It only takes 30S, that is, one wearing time to make you feel the heat, without preheating and long waiting. Compared with other heating pads on the market, our maximum temperature reaches 159℉. It not only heats up quickly but also has high heat, allowing you to open a new realm of efficient physical therapy Larger and more fitting size: designed according to the structure of the human body, it fits the neck and shoulder curves, making it more comfortable to wear. 24*20 large size, 2 inches more than other products, adjustable strap design, suitable for different body shapes, no matter fat or thin. And the neck extension design allows your neck to enjoy the heat therapy. The light weight of 1.2lb is comfortable even for elderly parents