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 31 litres weight 26 kg height 55 cm width 40 cm depth 20 cm wheels 4 wheel properties double wheels 360 rotating series samsonite starfire material plastic fabric specification makrolon polycarbonate inner material synthetic fiber material properties waterproof lock