Trolley bag hand baggage type of baggage soft shell cabin trolley approximate size s suitable for adults colour black bag feature on board luggage iata norm capacity 39 litres maximum volume 47 weight 4 kg height 56 cm width 355 cm depth 23 cm maximum depth 28 wheels 4 wheel properties double wheels 360 rotating series tumi alpha bravo material synthetic fibre fabric specification ballistic nylon inner material synthetic fiber materi