Polo Ralph Lauren Woven Flannel Shirt Men's Blue Orange Plaid Size Small - 

This "work shirt" has been worked in and can prove it by the splotch of white paint on the back near the bottom and a few specks of red paint....also on the back near the bottom.

Measurements in inches:

Chest (underarm to underarm) 20"

Length 27.5"

Sleeve 23.5"