Detroit Tigers Baseball short-sleeve button-down Shirt, Men's Medium, by Cliff Engle.

The Shirt is actually still New and has never been worn.
It has a very faint mark along the collar crease (from hanging in a closet).
Otherwise, the shirt is flawless.

35% Cotton & 65% Polyester.
Screen-printing front and back.
Vented hem.

21.5 inches armpit to armpit; and
28.5 inches bottom of back collar to bottom of Shirt.