So those of you who’s asked for a review on the heated vest. Totally worth it. Can’t speak for the battery life yet but I think on medium which is what I’m on right now, you’re supposed to get around 6-10 hrs. I have on a base layer, my vest, and a fleece and the only thing getting cold is my arms. Might throw on my jacket just for my arms. Any questions let me know. Sent from my iPhone using Tapatalk