Chaps Ralph Lauren wool & cashmere vintage camel plaid sports jacket 40R

This is a beautiful vintage sports coat from chaps Ralph Lauren This is late 80s or early 90s I put the measuring stick in the photos. I think it’s a 40 regular from pit to pit on the front and back. It’s a little bit more than 21 inches so to have room I would expected the fit of 40 comfortably. This is in like new condition of one of the sleeves does need to be pressed