Condition: 100% Brand NewItem Type: Warm VestMaterial: SBRLining Composition: PolyesterSoftness Index: SofterThickness: GeneralNumber of Layers: 2 LayersColor: BluePower: 10WVoltage: 5V / USB InterfacePower Supply: 5V/2APower Supply: Power bank or mobile phone charger (not included), ordinary power bank can last 3-4 hoursWaterproof Level: Washable or Machine WashableWeight: Approx. 412g-531g / 14.5oz-18.7ozSize (Optional)MLXLXXLXXXLShoulder Breadth38cm / 15.0in40cm / 15.7in42cm / 16.5in44cm / 17.3in48cm / 18.9inChest Circumference100cm / 39.4in104cm / 40.9in108cm / 42.5in112cm / 44.1in118cm / 46.5inClothes Length62cm / 24.4in63cm / 24.8in64cm / 25.2in65cm / 25.6in66cm / 26.0inUser's Guidance:3-speed thermostat automatically skips (preheating function)1. After connecting the thermostat to the power supply (battery), the red, blue and green indicator lights flash once, press the button for 3-5 seconds to turn on, enter the preheating mode, the LED displays red, high-end output, output power 100 %, about 60¡æ, use for 5 hours, short press for 1 second to switch2. Mid-range, LED display blue, use time 6-7 hours, about 50¡æ, output power 70%;3. At the low end, the LED displays green, the use time is 8 hours, about 40¡æ, and the output power is 40%;4. Click to switch gears, enter the third gear, press and hold for 3-5 seconds to close.1¡¢Electric heating vest, using high?quality SBR material, soft in texture and comfortable to wear. 2¡¢Ultra?low voltage, adopts universal USB interface charging, suitable for any type of power bank. 3¡¢With 5 heating zones, the back and both sides of the abdomen and waist are heated, suitable for winter use. 4¡¢The vest whole body is waterproof and washable. The power bank needs to be removed during cleaning. 5¡¢Suitable for outdoor skiing, winter fishing, cycling, camping, snow trekking, hunting, winter attendance, office, etc. 6¡¢Supports 3?level temperature control, one plug in and hot, long press for 3 seconds to turn on, after reaching high temperature, will automatically adjust to mid?range temperature.1.Please allow 0?1 inch error due to manual measurement. Thanks for your understanding.2.Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3.This product does not include power banks.1 x Warm Vest