Vintage 80's Mach II By Arrow button down blue floral shirt

Here is a stellar shirt with white floral pattern over blue. 3 button cuffs, single open pocket on the left breast and 2 invisible pleats down the back for a nice slim flit. I could not see a tag stating the material but my guess is cotton, and it is very thin. In excellent condition. Measurements Shoulder to Shoulder: 19" Shoulder to Cuff: 26" Pit to Cuff: 22.5" Chest: 46" Waist 41' Length: 30"