This listing is for the used shirt shown, which could use a good wash. It is in decent shape overall though, but you can see it isn't clean. It is missing the tag that tells the size, manufacturing country, material, etc. I tried it is for a second, and it fit me perfectly. I'm a size Large.
However, the arm sleeves were a little tight (like a Medium), which might display muscles nicely. To some, that is a defect, and to others, it is welcome. The shirt felt a little big on the stomach part.My guess is that this was once an XL shirt that shrunk in the arms and kept the rest of its original form. Feel free to ask any questions that you might have.