Air Cell AS21/55 R Backpack Strap

I know this strap design is for cello case, but didn't know it is not fitting my trombone case at all.
The straps are way too loose even when set to its shortest form, making it unusable for me.
Too bad to have to leave it at the corner, the build quality is otherwise unquestionable, very well build and feels stable and steady.

Try it before you actually get to use it especially if you're not using it with a cello case.

These are strong and well padded and make carrying a cello hard case much easier.