Here is a cool vintage short sleeve western snap shirt. Feels like a poly/cotton blend. Gray shirt with maroon, yellow, and light gray striping. Seven button front, with a buttoned pocket on each breast. Soft, light weight, and super comfy. In excellent shape with lots of life left! Here are the measurements. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 25"
Shoulder to end of sleeve (including cuff) 10"
Length 34"

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