The material is pure silk. It's very lovely, and the calm colors and Sarasa pattern are elegant and stylish. It has a beautiful design and a strong presence. The back is plain. There is a fold in the middle, but it is clean without stains. Size: 15 x 344 cm Hakata obi is easy to tie and doesn't easily come undone because of the silk's texture. 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 have other items for sale as well. Please take a look here: #emi hanhaba obi