I'm 5'11 about 175 LBS. Typically I fall between a medium and a large. Large usually fits my shoulders pretty well but is a bit baggy around my waist. Medium is often a smidge tight in the shoulders. Not always. I bought the medium Champion pullover wind breaker. It fits very well. But if I wanted to wear it over something like a sweat shirt, I would have needed a large.
Rating: [5 of 5 Stars!]