This is an Adidas down vest. I purchased it at a used clothing store. I couldn't find a size tag, but I measured it and it's approximately 68cm in length and 50cm in width, so I think it's probably a size M. Please note that these are amateur measurements, so there may be some error. The color is peeling off the bottom button (see photo 4). It's still wearable, but it's used, so please purchase only if you understand. 😊