Feature: - 11 Heating zones. When the power is turned on, the whole body can feel the warm. - Double control switch, can control the heating area before and after. - 1 Minute fast heat, dispelling cold and keeping you warm. - Set the temperature you want to respond to a variety of environments. - A button to heating, three stall temperature control, intelligent heating. - It can be washed by machine and can be washed by hand. Do not wring it by hand. - General USB interface power supply, longer service life, anti water splashing and washable. - The fashion is warm, comfortable and breathable, and it's a good partner for your winter going out.Specification: Style: Sleeveless Vest; Material: Polyester; Color: Black/Blue; Size: M/L/XL/2XL/3XL/4XL; Power Supply: 5V/2A Mobile Power (Not Included); Temperature range: 25-45 degree Celsius.Package Included: 1 x Heating Vest (Mobile Power Not Included).