The material is pure silk. This is a lovely item from Nishimura Orimono, with a beautiful color and pattern that is very cute and elegant, and has a definite presence. Nishimura Orimono is a long-established weaving mill with over 150 years of history, and their products are exquisite, using high-quality silk threads with a beautiful luster. It's reversible, so you can enjoy both sides. There is a fold in the middle, but it's clean with no noticeable stains. Size: 15 x 344 cm Hakata obi are easy to tie and don't easily come undone. Please understand that this item has been stored at home. Please note that the shipping method may be changed to Yu-Yu Mercari delivery. I am also selling other items. Please take a look here: #emi hanhaba obi