Vintage 1980's Olympic Marathon Trial for Carborundum.  Large t-shirt.  Made in USA.

Half polyester and half cotton.  Nice and soft/thin.  Comfortable.

This was still in plastic when I got it from an estate sale.  Looks like it was never worn.  Still factory folded.  It does have two little age marks on the front as seen in last picture.

RARE...YOU WILL NOT FIND ANOTHER ONE OF THESE!!!

Location D1, FBMP, MER