This is Nyanban from "Saunya (Saunya)". It's a sauna hat that you wrap around your head like a turban. The outer material is ivory waffle fabric, and the lining is a khaki towel-like material. The button that secures the elastic is blue. It seems they are not currently producing this, so it's probably difficult to obtain. I've used it a few times. I've cleaned and stored it after each use. I'm selling it because I bought another sauna hat. It's well-made, so you can use it a lot in the future.