Brady Men's Golf Polo Navy Size S/M

My son is purging golf polos (so please check out other listings, happy to bundle!)… unfortunately he cut the tag out of this one and I can’t remember if it’s a S or M, as he can wear both depending on the brand and fit. Measurements are as follows: - Pit to pit: 20.5” - Shoulder to hem: 27” In excellent pre-loved condition.