Honba Oshima Tsumugi is a traditional craft representing Kagoshima Prefecture. Originating on Amami Oshima Island, it has developed into a silk fabric unparalleled anywhere in the world. Only those products that have been certified through a strict 20-point quality survey by the Honba Oshima Tsumugi Textile Cooperative Association are given the "Honba Oshima Tsumugi" certificate of approval.