Trolley bag hand baggage type of baggage hard shell suitcase cabin trolley approximate size s suitable for adults colour black bag feature on board luggage iata norm capacity 40 litres weight 23 kg height 55 cm width 39 cm depth 20 cm wheels 4 wheel properties double wheels 360 rotating series titan x2 material plastic fabric specification polycarbonat inner material synthetic fiber material properties waterproof lockable combination l