Capacity34 LTDimensions57 x 39 x 28 cmFunctionalsDouble telescopic bar with Crossover System to "save" the shoulder straps. 3 uses: 1) Hand Luggage; 2) Backpack without the trolley cart; 3) Backpack with 17 cm-Maxi wheels. Other features Detachable carabiner. Reinforced bottom. Glitter fabric. Warranty2 YEARSBackPreformed and lined with outer fabric.ShoulderPadded and lined with outer fabric. The shoulder-straps can be lifted-up throught the CROSS-OVER SYSTEM: the height-adjustable retractable trolley handle lift the straps when it is used as wheeled backpack. PocketsFront pocket.FabricPolyester fabric.