1 sided or 2 sided print T-Shirts?

[JC Motors]

I have a few double sided T-shirts. I have one with a local fire dept on it. The front has the fire dept logo and on the back has a picture of their fire trucks. I also have an Interstate Batteries racing shirt with the car on the front and the number 18 on the back of the shirt.

[PJ]

Other than band shirts from concerts with tour dates printed on the back I don’t think I’ve ever worn tshirts with print on both sides.