Specification:  Name: Heating Jacket;  Material: Cotton;  Color: Black/Blue/Red;  Size: S/M/L/XL/2XL/3XL/4XL;  Voltage: 5V;  Endurance Time: 12 Hours (1000mAh portable battery, not included);  Heating Film: Carbon Fiber Heating Sheet;  Fever Parts: Collar, Back;  Gear: 3 Gears;  Heating Temperature: 45 degree Celsius, 35 degree Celsius, 25 degree Celsius.     Features:  5s rapid heating, 60s reached a stable temperature.  Made of high-quality spinning cotton padding, high-density windproof, effectively locks in heat.  3D cutting, good warmth and slim shape.  Long battery life, 5V voltage, 1000mAh portable battery(not included) can last up to 12 hours.  Carbon fiber heating sheet, 3 seconds of fever, 3 levels of adjustment, to rule out the body's wet and cold.  Waterproof and anti-fouling fabric is used to resist corrosion and block outdoor rain and snow.  Any cleaning, no need to disassemble, wash directly. Always remove the portable battery (not included) before washing and cover the USB plug with a waterproof cover.  The inner heating piece adopts carbon fiber wire, no radiation, stable heat generation and long service life.     Precautions:  If the heating coat is not used for a long time, you need to remove the power supply.  Heated coat should not be washed with high temperature water or strong alkaline acid washing solution.  The power must be removed before cleaning.  If the heating coat is wet, please turn off the power immediately and stop using it.     Package Included:  1 x Heating Jacket.