Specification: Style: heating clothes Material: polyester fiber Heating zone: 8 Power interface: USB Function: keep warm, splash water and prevent cold Washing instructions: 1. Take out the removable charger. 2. Use neutral detergent and then wash by hand 3. Do not rub or beat hard 4. It can be used after natural air drying packing list: 1 *Heating clothes (not including mobile power) Notice: 1. The dimensions are all handmade, please slightly deviate within 2 cm. 2. The color is real, but due to many factors, such as the brightness or lighting of the computer screen, it may be slightly different from the image on the website 3. This electric heating vest does not have a power bank or battery, but only contains a USB plug, which can be used with most power banks on the market. 4. If you encounter any problems during the purchase process, you can contact us and we will provide you with a perfect solution.