Upgraded heating elements generating heat from the abdomen and back to make you feel warm in 360 degrees. One button for 3 heating settings, made of soft skin-friendly material which ensures smooth and comfortable feeling. Features: Activates various functions between skin and promotes metabolism. Vitality restoration: it provides deeper adjustment of physiological functions to avoids sub-health state and restore the vitality. Set the temperature you want to respond to a variety of environments. A button to heating, three stall temperature control, intelligent heating. General USB interface, longer service time. Comfortable and breathable, and it's a nice partner for your winter going out. The product can be soaked and washed as a whole, and the power interface is treated with insulation and waterproof. Specifictions: Size: M, L, XL, 2XL, 3XL, 4XL (optional) Color: black, dark green (optional) Main material: polyester Interface: USB Temperature shift: Warm: 45-55 Degrees (Red Light) Comfort: 35-45 Degrees (Blue Light) Energy saving: 30-35 Degrees (Green Light) Packing List: 1 * Heating Coat 1 * Power battery