Size L There's no mention of Airism, but the fabric feels like it, so I think it's not Airism. I bought this a while ago and it's been stored away. I washed it before listing it. There are no noticeable flaws, but it has been worn. There are fold wrinkles. If you don't mind, please consider purchasing. I will fold it compactly, put it in a plastic bag, and ship it via Nekopos in a paper envelope. 1