Unexpectedly, the fabric is a slick nylon feel rather than the "cotton" I would expect from a baseball shirt, which is my chief complaint. I am an XL, and the shirt runs true to size but the arms are too narrow, which isn't comfortable. The neckline is also a bit larger than baseball shirts I've had in the past so it feels a bit odd (that could just be me). The graphic is really eye catching and it's a good looking shirt, well made. Wish I could get past the fabric, but will be returning.