Here is a cool vintage button down long sleeve shirt by Sears Fieldmaster. 80% Arnel Triacetate, and 20% nylon. Rich red fabric that feels like velour. Seven button front, a button at each cuff, one at each wrist, and a buttoned pocket on each breast. Medium weight, super soft and comfy. In great shape with tons of life left! The tag says Large, but here are the measurements (please refer to the last pic to see how I measure shirts)

Chest (armpit to armpit) 22"
Shoulder to end of sleeve (including cuff) 26"
Length 30"

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