Originally a men’s dinner jacket from the 60s, this has been worn by men and women for different events over the past 60 years. Single button, single vent. It’s just a great jacket in beautiful condition. Size is required by Posh but I’m not finding any label inside so guessing 38R but check sizing below. 19-1/2” across back at armpits 28” length 16-1/2” armpit to cuff