Trolley bag hand baggage type of baggage hard shell suitcase cabin trolley approximate size s suitable for adults colour blue 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 delsey helium air material plastic fabric specification makrolon polycarbonate inner material nylon material properties waterproof lockable combi