To the naked eye, I can’t see the white flecks visible in the photos, so I think it’s in good condition.
I’ve only worn it a few times and have kept it stored at home for a long time.
The size is 36. I’ve listed it as M on Mercari.
Since the tag is in English, it may have been purchased in the U.S.
Please keep in mind that this is an amateur inspection, so there’s a possibility I may have overlooked something. I hope you’ll consider this when making your decision.