Item Type: Heated Vest Material: Down, Carbon Fiber Power Supply Mode: USB Applicable Size: Free Size Package List 1 x Heated Vest 2 x User Manual 1Wide Application: Electric heated vest is the best choice in winter, suitable for skating, skiing, hunting, fishing, hiking and enjoying outdoor activities, etc. 23 Levels Temperature: Heated vest has three heating levels (4065), which can generate heat for six core body parts, help keep the body warm, promote circulation and relieve muscle ache and tension. 3Long Life: Smart heated vest is powered by portable charger, with 2A or 2.4A USB output, which can be kept at low temperature for 7 hours, medium temperature for 5 hours and high temperature for 3 hours. 4Exquisite Workmanship: Electric heating vest has a built in carbon fiber heating elements, which is made of quilting, lightweight design and fine lining, making it warm and comfortable to wear. 5Washing Note: In order to maintain the quality of the heated vest and prolong its service life, please wash it by hand or machine wash it in a laundry bag, and put it in a well ventilated place to dry.