Out of the packaging the shirt felt really good. It was a heavy weight and high quality cotton that was meant to be comfortably worn alone or under a jacket. This is not a lightweight t-shirt; it has form and structure! The circumference around the chest fit just right, but if you want a fitted size go with your normal size, if you want something looser and baggier, then up it one size and you should be fine. I would say this shirt runs very slightly small. The designs really pop in person. Worth it for any wardrobe.