Description:  This is a intelligence vest for you.  With mobile power storge pocket, easy travel.  1 minutes fast heat, dispel cold and keep 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:  Material: Polyester + Velvet;  Color:Grey/Black;  Size:M/L/XL/2XL/3XL;  Power Supply Interface: USB;  Power Supply: 5V/2A (Power Bank is not Included);  Function: Keep warm, Anti water splashing and Prevent cold;  Age Of Application: Adults Men.     Temperature (Manual adjustment):  High Temperature: 65 degree Celsius±5 degree Celsius (Red Light);  Middle Temperature: 55 degree Celsius±5 degree Celsius (White Light);  Low Temperature: 45 degree Celsius±5 degree Celsius (Blue Light).     Washing Instruction:  1.Take out removable charger.  2.Neutral detergent is available and then hand wash.  3.Do not force knead or beat.  4.After nature air drying can be use.     Package Included:  1 X Sleeveless Vest (Power Bank is not Included).