This is an inner bag specifically for the ryuteki (slender ryuteki flute). One item. Bag only. Made from silk crepe (shoken) kimono fabric. This uses the minimum amount of fabric to fit inside the ryuteki's case. Other flutes will not fit. It closes smoothly and snugly into the case. The excess fabric at the top has been shortened. Handmade (please understand that identical items cannot be made). Made with silk (silk). May shrink when washed (if you absolutely must wash it, hand wash in lukewarm water, gently squeeze out water, and dry in the shade). Note: ⚠️ I tried putting a Nokan flute in it, and it didn't fit. Even for ryuteki, thicker ones may not fit. Because it's silk crepe, it's less likely to snag on splinters in the case. Perhaps because it's natural silk thread from silkworms, not a petroleum product? I don't know the exact reason for the difference in snagging. It might be the fineness of the thread. The sewing thread is transparent thread, sewn in double. Shipping method may change during transit.