Heated VestA battery heated vest keeps you warm on even the coldest days. The material is very comfortable and with the 3 heat settings, you can enjoy more than 5 hours of enchanting warm. A heated vest is the ideal outerwear for a cool day and even more brilliant when the winter really bites. The heated vest has three heating zones, which can be regulated in three different heating stages: low, medium, and high. The included battery is the size of a small cell