The original since 1996: The patented Fiedler backpack system is the world’s most ergonomic and comfortable backpack system for instrument cases. It fits nearly all cases for stringed instruments and brass instruments and can be adjusted perfectly to the musician’s body size. Unique details are the detachable wedge shaped cushion, the large, detachable music pocket and the integrated cello endpin holder. Equipped with the optional “Deluxe” cushion or the well padded hip belt, it becomes even more comfortable.