Features1. Product Features: The heating vest has a built-in usb interface, which can be powered by any 5V2A mobile power supply. 5V voltage, compatible with most mobile power supplies on the market. There are 3 temperature options: 55c, 50c, 45c.2. Warming and Relief: With six area of heating, it covers your entire body and provides faster heat to keep you warm and comfortable this winter. Our heated blanket promotes blood circulation while relaxing the body to fatigue and can be used as a vest coat cape.3. Usage: Plug in the power bank, press and hold the power button for 3 seconds to start preheating, and then adjust to medium temperature for heating, you need to connect the power bank all the time.4. Occasion: Heating vest helps to promote blood circulation and muscle pain. Perfect for dog walking, skiing, hiking, motorcycles, mountaineering, sports, camping, fishing, and even keeping warm in cold winters.5. Washing Instructions: Take out the power bank and neutral wire for cleaning. It can be machine washed or hand washed. Do not rub or tap it.SpecificationMaterial: Down cottonColor: GreySize: 132 x 110 cmWeight: 600 gVoltage: 5V/2APackage Include:1 Heated Vest