Natural Awa Ai (Indigo) Dyeing: Master Craftsman Akihito Sato - Obi (Sash) - Aiko Sai (Indigo Fragrant Colors) - Akujihakkou Tate Hon-Ai Zome (Ash-Fermented Natural Indigo Dyeing) - Tsukuri Obi (Pre-tied Obi) Akihito Sato, a modern master and the 19th generation indigo artisan, is a holder of the national intangible cultural property for Awa Ai manufacturing techniques. This is a beautiful item of Awa Ai dyeing by him, which has gone through the process of natural ash fermentation. Color: Blue, Indigo Type: Obi (Sash) Obi/Obi Accessories: Tsukuri Obi (Pre-tied Obi) Material: Silk With a decorative box.