This is an original backpack from Muramatsu, a long-established flute maker. I purchased it about a year and a half ago at Yamano Music in Ginza. The retail price is 13,200 yen including tax. It can secure both C and H flutes, including their case covers. I only play the instrument as a hobby, and I used it about three times a month at most, carrying it for very short periods. I don't think there's much deterioration, but please be aware that it is a used item. (From the official website) This is a backpack-type case cover made of nylon with water-repellent properties. If you store the flute in the inner pocket, you can separate it from other luggage, providing peace of mind. Furthermore, it is made in a generous size that can accommodate large sheet music. It also has a cushioning material to absorb shocks, allowing you to carry your instrument safely. [ Color ] ■ Black [ Material ] Nylon [ Size ] Inner dimensions W:310 x H:460 x D:110 (mm) - Color: Black - Material: Nylon - Handle Type: Top Handle - Strap Type: Adjustable Shoulder Straps - Zipper Type: Two-way Zipper - Additional Feature: Front Zip Pocket Thank you for looking.