Description:  -This is a intelligence coat for you.  -Built-in portable source storge pocket, easy travel.  -Back abdomen zone fever, covering the cold area.  -Set the temperature you want to respond to a variety of environments.  -A button to  heating, three stall temperature control, intelligent heating.  -The fashion is warm, comfortable and breathable, and it's a good partner for your winter going out.  -General USB interface power supply, longer service , anti water splashing and washable.     Specification:  Name: Heating Coat;  Cloth Material: Polyester;  Heating Material: Carbon Fiber;  Color: Black/Blue/Army Green;  Size: M/L/XL/2XL/3XL/4XL;  Voltage: 5V (Portable Battery is not included);  Heating Position: Back;  Gear: 3-gear(45degree Celsius,35degree Celsius,25degree Celsius);  Function: Keep Warm, Anti Water Splashing and Prevent Cold.       Package Included:  1 X Heating Coat (Coat Only, without Inner Cloth).