Info från tilverkaren:

SPS (Sideway Protection System) is fiberglass-inlay worked
into the cloth of the bag, which provides overall protection to
the instrument. Besides the highly compressed, 20mm high
foam-linning , the SPS-system guarantees perfect protection against
shocks and other external hazards.

* SPS®-system
* Wide shoulder strap
* 2 accessory pockets
* 2 music sheet pockets
* Also suitable for 1 trumpet and 1 flugelhorn
* Without rucksack assembly