Love this vest!

I have three of these vests. First I bought a size medium (I am 5'6" and weigh 125) and it was fine. The next two I bought were smalls, and they actually fit better. The medium is still okay, but roomy. It definitely helps keep my core body warmer without wearing a ton of extra clothes. I'm not crazy about the black collar on the grey vest, but it will do. The solid black is my favorite for going with everything.