It barely fit him.
My brother-in-law normally wears a medium so I ordered an adult male size just to be safe. He could hardly get it over his head and the arms were short as was the length of the sweatshirt. Of course, it was my fault. Anyway I have to say that the lettering was very nice as was the quality of the shirt itself. It probably was mismarked at the factory. He will likely pass this on to his grandson trying not to hurt my feelings. I just wish I had known it ran so small. Live and learn.