LAID FLAT IT MEASURES 16" ACROSS THE CHEST FROM UNDERARM TO UNDERARM AND 22.5" LONG FROM THE TOP OF THE SHOULDER TO THE BOTTOM HEM. THE SIZE TAG READS SMALL BUT IT FITS MORE LIKE A MEN'S XS BY TODAY'S STANDARDS. IT'S SUPER SOFT AND PERFECTLY BROKEN IN FROM DECADES OF WEAR. THERE ARE SOME HOLES WHICH CAN BE EXPECTED OF A SHIRT THAT'S 50+ YEARS OLD.