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 38 litres weight 22 kg height 55 cm width 40 cm depth 20 cm wheels 4 wheel properties double wheels 360 rotating series samsonite neopulse material plastic fabric specification makrolon polycarbonate inner material synthetic fiber material properties waterproof loc