After doing a massive closet cleanout, I discovered I have about 10 white button down shirts.  And while I do wear many of them fairly often, I don't need 10.  And This is one I found that I have never worn.  The size is XL.  The armpit to armpit measurement is about 24 inches.  There are tartan accents on the inside of the collar and cuffs.  They won't show unless you flip the cuff up like I did in the photo.  Traditional white oxford cloth that will stand up straight when starched.  Classic!