Kaki-shibu (persimmon tannin) sake bag NO. 7. Fabric for stylish handmade projects. Size: W73 x H30 cm. Three tears: ① 9x20 cm, ② 10x5 cm, ③ 2x1 cm. Cylindrical, one side only. Stains throughout. Although they've become less common now, these sake bags were dyed with kaki-shibu to improve preservation during the sake brewing process in breweries. The subtle color variations caused by the chemical reaction between the kaki-shibu and alcohol, as well as the years of use, and the repaired tears, all contribute to the unique character of the bag.