He makes them at Hat Zone and already has a large number of characters stored in his computer. You'd be getting away cheaper than buying a ready-made hat. And you get to score one for the home team. They are 100 percent wool and are the same caps worn on the field by pro ball players. Used by pro teams for batting practice and at training camp.
Major maker is Zephyr and the focus is on college teams.
The front character usually represents the school mascot. The circumference is your hat size. The brim should not be straight-across, but curved around your face. Possibly a little, even if it's not wool. Use watered down Simple Green or other detergents.