The material is pure silk. This is a beautiful piece made by Nishimura Weaving, with elegant colors and patterns that exude a sense of presence. Nishimura Weaving is a long-established weaving mill with over 150 years of history, known for its exquisite pieces made with high-quality silk threads that have a beautiful luster. The reverse side is plain. There is a fold in the middle, but it is clean with no noticeable stains. Size: 14.5 x 340 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-Pack (Japan Post). I am also selling other items. Please take a look here: #emi hanhaba obi (half-width obi)