Sutter and Grant a private label, made these button down shirts from 1996 till 2005 This one was bought in 1998. Its in excellent condition. Its been worn but if it was ironed it would look new ,I don't iron lol. There are no size tags ,however the measurements are Shoulder to Shoulder is 22 in. Pit to Pit is 24.4 in. Waist or belly laying flat is 26 in. The Length is 31 in. in the front and 32 in. in the back. The sleeves are 24 in. . So I'm going to say its a 2x . Please let me know if you have any questions.