Waterproof, anti-fouling, warm, breathable, wear-resistant, ultra-light, anti-static, acid-proof. The weight of the product is about 450g light as feathers, and the inner clamp is pure cotton to ensure that the temperature will not be lost; USB charger. Mobile phone, charging treasure, computer... can supply power.Carbon fiber heating conductor, safe and energy saving,Heating up to 8 hours,3 file temperature control adjustment.Full body waterproof. Washable. Softness index: softer Fabric Name: Polyester Lining Ingredients: Polyester (Polyester) Main fabric composition: polyester fiber (polyester) Thickness: quilted Number of floors: three layers Voltage: 5V/USB interface Power supply: 5V. 2A Power bank: 8000MAH Snowman power supply: charging treasure or mobile phone charger Waterproof rating: washable 1. After the thermostat is connected to the power supply (battery), the red, blue and white lights flash once,press the button for 10seconds to turn on, enter the preheat mode, the LED displays red, with breath flash,high-end output, output power 100%, about 65 Celsius, 3 hours of use, automatically jump to mid-range after 5 minutes of heating; 2. Mid-range, LED display blue, use time 4 hours, about 55 degrees Celsius, output power 70%; 3. Low-end, LED display white, use time 8 hours, about 45 degrees Celsius, output power 40%; 4. Click to switch the gear position, the third gear cycle, long press 10 seconds to shut down. Package includes:1X Heating Vest Size;Back middle length; Size:XXXXL 73cm/28.74'' 61cm/24.02'' 47.5cm/18.70'' 60cm/23.62'' 25.4cm/10.00'' Back middle length:73cm/28.74'' Bust:61cm/24.02'' Shoulder width:47.5cm/18.70'' Swing around:60cm/23.62'' Sleeve cage :25.4cm/10.00''