Here is an awesome vintage t-shirt by Sportswear. 50/50 poly and cotton blend, made in the USA. Celtic green shirt with super cool Dublin Fire Brigade graphic on the front. Thin, soft, and super comfy! It's in amazing shape 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) 21"
Shoulder to end of sleeve (including cuff) 8"
Length 29"

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