I don't know the details as it's something from my aunt's belongings. It seems she dyed and stored plain fabric. The paper it was stored in says "variant plain." There's nothing written on this fabric, but another piece of fabric has "silk" written on it, so I think the material is silk. While I was rewinding it, there was a snag-like scratch (about 35 cm long) in the middle. I don't know if it will affect sewing.