Dimensions: 51 x 41 x 35 cm (removable backpack: 40 x 29 x 12 cm); Capacity: 43 litres total (removable backpack 15 lt) Back: Padded and covered in fabric; Straps: Padded and covered in fabric Pockets: Detachable front zip pocket that becomes a backpack with ribbon shoulder straps Other features: Removable trolley with 3 wheel system, crossover system with clips for attaching the belts, double telescopic bar with two height adjustments, reinforced bottom and corner protectors. 3 possible uses: 1) use trolley with retractable shoulder straps; 2) Use backpack without unhooking the trolley; 3) Use backpack when completely unhooked from the trolley Fabric: Polyester