I am using two of these - one with a Bach 42B Bb / F tenor trombone, and the other with a Bach 16M (Watrous) style medium bore horn.This case has many feathers, including a separately sold set of backpack straps. There are two compartments for lube, or mouthpiece (zippered), along with an included mouthpiece pouch for your horns mouthpiece. A basic shoulder strap is also included in the package, so you can use that right away.The bell section is kept restrained with a padded strap. There is plenty of padding around the bell edge area, also on the outside there are heavy plastic edges and feet which serve to protect the delicate musical instrument inside.For the trombone slide, there is a full length hinged divider which is kept down via good sized Velcro straps in the middle and on the end. There are various raised, pads on the slide side which hold your slide into position, preventing it from slipping up or back and forth.This level of Protec model is based upon a nylon fabric covering a solid shell, and zip closure. There is a decent size zippered side pouch where I keep a K&M trombone stand; this is around 20 inches long, 5 inches deep and maybe 1.5 inches thickness of the pouch.Some of the competition to these cost much more. Today instrument cases have become rather expensive.