Here is a super cool vintage jean jacket by Bill Blass. 100% cotton. Rugged dark blue denim with subtle gray stitching. Six button front with a buttoned pocket on each breast, two button sizing tabs at the waist, a pocket on each hip, and a button on each cuff. Medium weight is warm and comfy. This thing looks practically unworn! Amazing condition with years of life left! Here are the measurements taken laying flat. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 20"
Shoulder to end of sleeve (including cuff) 21"
Length 23"

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