Bests & Worsts Reviews from Amazon

Only had this for one day, but I am wildly impressed. If things go wrong in the future I'll update. Here are a few observations. I'm 5'9" and 170 pounds. Kind of a slim build. I ordered the large and it fits perfect. I think if you've got any type of gut, or big chest you'll want to go larger. The construction is very well done and has a nice feel. It's lightweight and fits under my jacket without feeling bulky. Plus, it looks good. You won't be afraid to wear this in public. The charging process was sort of confusing to me. Here's what I discovered. The battery itself has four pinholes on it, which I later discovered are lights that indicate the charge. The instructions are typical overseas weird. When you plug it in, the charger unit itself lights red. Eventually it goes green letting you know its charged. I still had no lights on the battery and was concerned. In order for those lights to light it needs to be disconnected from the charger and SHAKEN (?!). I don't understand, but thats when the four blue pinholes on the battery activate. Yesterday was cold, but not crazy Montana cold. But in its first day out it warmed up nicely. Units on the back and chest, and collar. I particularly like the collar to keep my neck warm. My only very minor complaint is that the insignia on the left breast lights up while in use either red, white or green. I'm sure it will lead to questions about whether I'm from the starship Enterprise. But I can live with the joking, as long as I'm warm.