SPS®-system. Made of 1680 Denier Cordura material, in black colour. Padded plywood at the bell. 5-sided box, made of plywood, compartmentalised, applied accessory pocket, soft handle, magnetic closure. Adjustable Deluxe backpack straps, with a new closure system (GEWA system). Usable strap pocket also serves as a sheet music pocket, shoulder strap. Suitable for up to 2 bass trombones with a bell diameter of Ø 9.5". Adjustable interior padding for various instrument sizes. Interior pocket size for pulling: approx. 84 cm.