I've had this fleece for a few months now, and it is the warmest fleece I own. Well how couldn't it be? It's heated! Fits nice... A little snug around my neck when fully zipped, but other than that it fits great. Perfect for super cold weather especially if you are not moving around to keep warm... i.e. watching a sporting event, hunting, fishing, etc. I have gerbings 12V that I plug into the moto, but this fleece is more of an everyday garment. Fashionable and warm. The battery is great so far. I haven't had the fleece on for an extended period of time yet, so I can't comment on battery life compared to advertised, but it does seem to last a while being turned on and off in between charges. As always, excellent customer service and fast shipping from Revzilla!