This is a Derby of San Francisco vest purchased this year. Size L, black. Purchased online at BerBerJin. It seems they updated the sizing to be oversized this time, and it was a bit too big, so I put the new item through the dryer. Detailed measurements (flat lay): Shoulder width: 45cm Body width: 60cm Length (front): 73cm Length (back): 78cm Please note that there may be slight variations due to amateur measurements. It's a new item that has only been put through the dryer, but the tag has been removed, so please consider it as used.