This t-shirt is a great example of the kinds of gear Letterman's team would produce.
Constructed of classic navy, this 6.1oz 100% preshrunk cotton t-shirt was made in Mexico by Champion. Featuring a chest graphic with the word "PANTS" set in all-caps, collegiate letters in an arched formation. The shirt is in excellent condition. The screen print has begun to crack throughout.
Label reads: Champion Authentic Athletic Apparel, Vétement Athletique Authentique; 100% Cotton; Made in Mexico; Size M