Feature:  1. This is a intelligence coat for you, built-in portable source storge pocket, easy travel.  2. Comfortable and breathable, and it's a good partner for your winter going out.  3. Face beauty and body shaping.  Activates various functions between skin and promotes metabolism.  4. Body warming and blood circulation.  Warms the human body, consumes excess heat, increases blood oxygen and fluidity.  5. Vitality restoration.  Provides deeper adjustment of physiological functions to avoid sub-health state and restore the vitality.  6. Pain relief.  Can improve the body's microcirculation, dredge and activate the meridians, eliminate local pain and inflammation.  7. Infrared heating with no harmful radiation and stable performance is safe and reliable, environmentally friendly, energy saving, soft and comfortable.     Specification:  Size: M, L, XL, 2XL, 3XL, 4XL, 5XL, 6XL, 7XL (Optional);  Color: Black, Blue, Red,Grey (Optional); Material: Polyester;  Power Supply Interface: USB;  Power Supply: 5V/2A Portable Source (Not Included);  Fever Area: 7 heating zones;  3 Temperature Adjustment:(Manual adjustment)  High: 45 degree Celsius /113degree Fahrenheit; Medium: 35 degree Celsius /95 degree Fahrenheit;  Low: 25 degree Celsius /77 degree Fahrenheit.     Note:  1. It is Not recommended to use high temperature for a long time to avoid burns.  2. Batteries, connecting plugs and chargers should aviod contact with water during operation. It should be used in completely dry condition.  3. NOT for Pregnants women, young children and those who can not express their willingness 4. those with pacemakers are disabled.  5. Please DO NOT disassemble, modify the heating film and control circuit, to prevent man-made damage to hot components.  6. The cable is waterproof, can be washed.  7. People who are sensitivity to heat applications (diabetics,circulatory problems) should not wear the battery heated vest. Please consult your physician before using.  8. Always connect it to the power bank when heating.  9. Power bank is not included in the product.  10. Do not use electricity for wet clothes. Please turn off the power and stop using in the rain.  11.Do not connect directly to the power charger, please use the mobile charging connection as a power supply.     Package Included:  1 X Electric USB Coat.