Zipper closure Zipper Closure / Water & Wind-Resistant Hand Wash or Machine Wash 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. Once it is overheat, it would stop until the heat return to the standard temperature, so it is 100% safe to use. New Updated Heated Vest: Our heated vest for men women are built-in 8 carbon fiber heating elements and smart overheat protection across the front and back, which can quickly and safe generate heat. Even in extremely cold weather, you can quickly enjoy the comfort brought by warmth. So this heated vest for you to enjoy outdoor activities like fishing, camping, hiking, motorcycling, skiing, hunting, climbing or some outdoor works. 4/9 Updated Heating Areas: Our new heated vest for men women covers 4/9 heating areas, which covering the whole chest, abdomen, nape and waist. And the electric heating vest can be heated quickly within 30 secends, helps to promote metabolism, stimulate blood circulation, relieve rheumatism & muscle pain, as well as pain of menstrual cramps. Stylish appearance and super warm performance is your best your gifts,makes your lover, parents or friends full of love and warmth in this cold winter. 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. Tips for Warming Heated Vest: Please choose the right size according to the size chart, the size from M to 13XL, which makes this unisex warming heating vest can adapt to more body types. To maintain the quality and expand the service life of the heated vest, please hand wash the vest or put the vest into a mesh laundry bag for machine wash. Drip dry the heated vest in a cool, well-ventilated place before the next use. DO NOT bleach, iron, dry-clean the heated vest.