I purchased this at an outlet. The tag is not attached. I bought it at a low price because the size was unknown, but I haven't worn it and have kept it in the closet. It's new and unused. I've listed it as S on Mercari, but the waist is half-elastic, so I think it's a size S-M. Please check the photos with the measurements. Please note that there are wrinkles because it was stored at home. If you understand the above, thank you.