Zipper closure Electric Heated Jacket with Hood: the jacket is made by cotton, polyester , which can help keep warm . The size from M to XXXXL is suitable for almost everyone, please choose according to the size chart Power Bank Needed: This heated vest only can be connected with removable power bank, no power adapter conneting You need to fully charged your removable power bank firstly, then connect with the heated vest. When the power bank is disconnected, the heating vest will also stop working. Power bank is not included Built-in thermal protection module. 9 Heating Areas: The heating component of heated jacket is made of imported carbon fiber, and it has 9 heated areas, including the left abdomen, right abdomen and the back, back nape position. With mature heated technology, this heating coat jacket can warm up rapidly in extremely cold weather. 3 Tempreature Level: This warming heated vest features 3 heat settings so you can choose your preferred temperature with a simple click of specified button: High (Red Light, 113, 4-6 hours), Medium (White Light, 95, 6-8 hours), and Low (Blue Light, 77, 8-10 hours). Your body will be comfortable and does not sweat because of overheating, and comfort as spring. And the individually controlled design of the electric heating vest makes your device more power-efficient and more durable. Applicable Scenes: The winter heated coat can help promote blood circulation, relief pain of muscles, Ideal gift for family members, friends, employees. And it perfect for outdoor activities like a snowmobile, motorcycle, mountain, camp, hike, ski, Fish, Hunt or office routine and business try during fall and winter.