This is a soft case for a trombone. It has a lot of pockets. - Bell storage compartment - Slide storage compartment (with hard cover) - Mouthpiece pocket (holds 3 mouthpieces) + extra space for a stand or music stand - Multi-purpose pocket - Pencils, mutes, etc. I think it can hold everything you need for a performance. It has been unused and stored at home since it came with the instrument when I bought it.