I like this sweater because it's super warm yet very light weight. It's become my favorite pullover. Although I bought a small, a medium probably would have given me a little more room for another layer underneath.Wow.. I expected some cheapness.. None to be found. This is a great fitting, quality coat. The armpits are ventilated which is outstanding if you are wearing this as a second layer (under a third) or just in general. I really like mine an wear it everywhere (Winter in MI tight now.) Cant go wrong. I got an XL and it was a bit too big (I'm 6' 1" 215). I wanted something a bit more form fitting (not tight), so I got the large, and it was spot on. Excellent!! Going to get another in s different color (I bought grey).