The certificate stamp will be inspected by the Amami Oshima Tsumugi Cooperative Association. Oshima Tsumugi fabric, pure silk, torn. This is an unraveled Oshima Tsumugi kimono with new binding. The color is created through a scientific reaction between the tannins of Amami's Tachi wood and Amami Oshima's mud, which is rich in iron.
