Trolley bag hand baggage type of baggage hard shell suitcase cabin trolley approximate size s suitable for adults colour grey bag feature on board luggage iata norm capacity 438 litres weight 26 kg height 55 cm width 35 cm depth 25 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 com