This is a "double-layered koto bag" for carrying the koto body. ★ To enhance the protection of the koto, the fabric is made with a "double layer." The "double-layered koto bag" can be used as is, but for those who want to further enhance the protection of the koto, there are two "long pockets" in the "koto bag" where you can insert "cushioning material." By inserting "cushioning material" into the "ryuko" and "ryufuku" parts, you can cushion the impact during transportation of the koto. Please choose "cushioning material" and cut it to the appropriate length. ★ The "double-layered koto bag" is designed to be used as both a "yutan" and a "maru-bukuro," serving two purposes in one. I, who play the koto, handmade this. It's a bag for a 13-string koto, using unused or remade fabric. It is made based on a koto that is around 185cm long. When going to a koto concert, transporting the koto is difficult. When carrying the koto, you wrap it in a "maru-bukuro" and put it in a soft case, but isn't it a bit cumbersome because the "maru-bukuro" takes up space while wrapping the koto? So, I thought about whether I could easily wrap and transport the koto, and I made a "koto bag" for 13 strings. I tried to make it so that you can put the koto body directly into the "koto bag," then put on the "yutan" you usually use, and put it in a soft case as is. Concerts have many people and kotos, so it also saves time. The "koto bag" is made of silk or other materials. Basically, it uses remade fabric, so please understand that it is not perfectly clean fabric. There may be some odors or yellowing, but the smell will likely disappear as you use it. Therefore, I would like to offer it at a low price. [Because it is a handmade work by an amateur, there may be distortions or misalignments. The color may look slightly different from the actual product.] This is for those who understand handmade products. It will be folded, put in a plastic bag for waterproofing, and shipped. "How to put in the koto" 1. Place the koto on the floor. The player raises one knee on the floor. Place the koto on that knee and insert it from the ryubi (tail). The ryubi should be near the knee. I think this is safer. 2. Using a standing playing stand. The player should do it in a safe way. ※ The koto is not included.