Trolley bag hand baggage type of baggage hard shell suitcase cabin trolley approximate size s suitable for adults colour green bag feature on board luggage iata norm capacity 37 litres weight 26 kg height 56 cm width 35 cm depth 21 cm wheels 4 wheel properties double wheels 360 rotating series hauptstadtkoffer kotti material plastic fabric specification abs inner material synthetic fiber material properties waterproof lockable combinat