The material is pure silk. This is a very lovely and stylish hanhaba obi (half-width obi) made by Nishimura Orimono. Nishimura Orimono is a long-established weaving mill with over 150 years of history, and this is a masterpiece made using high-quality silk threads with a beautiful luster. It's reversible, so you can enjoy both sides. Size: 15 x 362 cm I believe it's unused, and it's clean with no stains or blemishes. Hakata obi is easy to tie and doesn't easily come undone due to the silk's texture. Please understand that this has been stored at home. I am also selling other items. Please take a look here: #emiHanhabaObi