Estate Find Vintage work shirt from 70s dark grey button front no material tag - feels like cotton or cotton blend - reminds me of a softer chambray type fabric machine wash No size tag so I think this is either a M or L - check measurements for fit: Approximate measurements: laying flat; 30 inches from center back to bottom edge; 23 inches from armpit to armpit nice vintage item, some mild softening of fabric, but overall way cool; still a great item cust320aarfpax A373 all clothing items have been cleaned to standards