Radcliffe by Sag Harbor Size label has been cut off -I am basing my measurements on another Sag Harbor blazer that is a size 16. That blazer has the armpit to armpit as 22 inches. 100% wool Lined 2 front pockets One button closure No shoulder pads Measures 22 inches armpit to armpit (flat) Shoulder length measures 24 inches Measures 29 inches from shoulder to bottom of garment