【Woodwind Instrument Case Bag】PROTEC C5 Convertible Backpack

This is a bag for PROTEC woodwind instrument cases. (This is a case cover, not a hard case.)
I purchased it on Rakuten last year and used it for a little over a year, but I am selling it as I will no longer have opportunities to use it. There are some minor stains from use, but as it is a black bag, they are not very noticeable. Also, it was used for outings about once every 1-2 weeks, so it does not appear to have excessive signs of wear. (As this is a used item, please check the condition in the attached photos before purchasing. No claims or returns will be accepted.)

I used it as a case bag for a clarinet, but it can also be used as a case bag for flutes or oboes.

The shoulder strap is detachable.

Thank you for your consideration.