Well this one does need explanation. I think halfway through the design it was flipped from portrait to landscape.
All belts are available in three sizes
Art on a Swivel
The belts are adjustable if in doubt go for the size up. The end connected to the buckle can be cut shorter. When deciding the size measure his/her belt and get one that is as long. Matching a waist size may result in a belt that is too short.