Im 5'10 230lbs and an XL fits me perfect with room to even throw on a tank top undershirt underneath. The neck definitely fits a little weird, hence 4 stars. It's wide and not fitted or rounded more neck shaped like a normal t-shirt or jersey. So if you do enjoy wearing undershirts or dont like your collarbone potentially showing it might be a bit annoying. Perhaps going down a size would lessen this. Jersey looks and feels great though so I'm happy either way.
