This is a real nice jersey but fit just a little too snug for the layering I wanted to use. I decided to go with a similar Gore product that gave me a little extra room. It was a tough call though. I'm 5'11, 160lbs, size 39 jacket and this fit real well and would be perfect if you plan to use with only a single base layer. Note the Windstopper fabric appears to stop at the elbow so if you are looking for wind protection for your lower arms, you'll need some arm warmers to get the job done.