This is a real vintage Japanese kimono. It does not have a belt because real Kimonos do not come with a belt. I am not sure yes it is 100% so. It definitely feels like it. There is no tag to confirm the material. I would say it’s a size medium. It’s extremely beautiful and in great condition for its age. Small spot on the inside lower part of the robe please see picture. Smoke free. No rips. Absolutely beautiful