Hello folks, I would really love to trade this jacket for a smaller size - I messed up and accidentally purchased the wrong size - but I am also open to selling it outright. This jacket is sized medium (I need a small, possibly an extra-small) with the following details: Across the shoulders: 17 inches Across the chest: 19 inches Sleeves measured from the top of the shoulder seam: 26 inches Down center back below the collar: 29.5 inches This jacket is in great shape and as far as my discerning eye can tell, is without defects or issues. I have some photos attached, which should be noted are not my personal photos. Please contact me if you should have any questions. Thanks!