Here is an awesome vintage T-shirt by Jerzees. 50/50 poly and cotton blend, and made in the USA. White shirt with great Phi Sigma Sigma stuff in blue on the front and back. Could be from the 80's, but I'm calling it 90's. Medium weight, soft, comfy, and in amazing condition with tons of life left. The tag says Extra Large, but here are the measurements. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 23"
Shoulder to end of sleeve (including cuff) 9"
Length 29"

This item is sold from a vintage boutique in Roanoke, VA.