This is a super-obscure vintage tee- it has a large "Jedi Jamma Spring 96, May The Force Be With You" graphic on the back and a smaller one of the same on the front chest. Maybe it's a gamer or geek thing or it could be a frat thing or ??? I'm clueless. It's off-white poly cotton knit with black print and is
 
Pre-owned, used. In good condition with no noted holes or stains.
Genuine vintage from 1996, the shirt was probably white but has aged to a mellow off-white.
 
Marked as size XL- actual tee measurements are--
Pit to pit- 23" 
Center front length- 24 1/2"