Features: 1.High-grade fabric: Made of 100DM four-way elastic composite polar fleece fabric, which has excellent thermal insulation performance, good stretchability, and slim and beautiful appearance. 2.USB power supply: universal USB port power supply, convenient and fast, no need to worry about battery problems. 3.Double button switch: 5V double button switch, which can control heating in different areas to meet needs. 4.Efficient heating: It uses carbon fiber for heating, which is efficient and durable. It has 5 heating zones (three on the back and two on the abdomen) to keep warm in all directions. 5.Machine Washable: Use a mesh laundry bag, machine washing can also ensure the life of the heated vest. Specification This unisex heated vest, with carbon fiber heating sheet, can adjust the warmth level, suitable for outdoor travel, sports, leisure, and other occasions in winter. Features: High-grade fabric: Made of 100DM four-way elastic composite polar fleece fabric, which has excellent thermal insulation performance, good stretchability, and slim and beautiful appearance. USB power supply: universal USB port power supply, convenient and fast, no need to worry about battery problems. Double button switch: 5V double button switch, which can control heating in different areas to meet needs. Efficient heating: It uses carbon fiber for heating, which is efficient and durable. It has 5 heating zones (three on the back and two on the abdomen) to keep warm in all directions. Machine Washable: Use a mesh laundry bag, machine washing can also ensure the life of the heated vest. Specifications:  Material: Polyester, carbon fiber Size: S/M/L/XL（Optional） Package Size: 32*22*5cm / 12.6*8.7*2in  Package Weight: 800g / 28.2oz Package List:   1 * Heated Vest (Battery Not Included) Package List: </strong> 1 * Heated Vest (Battery Not Included)