Trolley bag hand baggage type of baggage hard shell suitcase cabin trolley approximate size s suitable for adults colour silver bag feature on board luggage iata norm capacity 40 litres weight 24 kg height 55 cm width 40 cm depth 20 cm wheels 4 wheel properties double wheels 360 rotating series titan prior material plastic material properties waterproof lockable combination lock tsa lock integrated lock main compartment feature flip ope