Thank you for viewing! This is an old men's nagajuban (undershirt for kimono) from my collection. It has a rather interesting pattern, and I thought about remaking it, but I haven't gotten around to it, so I'd be happy to pass it on to someone who likes it. I believe the material is wool, but I'm not certain, so I'll leave it as unknown. There are stains. It's an old item and has been stored, so please refrain from purchasing if you are concerned about minor details.