This is a CristaSeya collarless jacket. The size is M, and I purchased it for around 150,000 yen at a select shop in Tokyo. It has a unique texture and pattern, and a comfortable, relaxed fit. I was told that this pattern of collarless jacket was rare in domestic distribution. There is some nep (slub) characteristic of the material, but there are no stains or tears, and I think it's in very good condition. I'm considering keeping it, so I may remove the listing. Please don't hesitate to buy it.