Trolley bag hand baggage type of baggage soft shell cabin trolley approximate size s suitable for adults colour brown bag feature on board luggage iata norm capacity 39 litres maximum volume 44 weight 25 kg height 55 cm width 35 cm depth 20 cm maximum depth 25 wheels 2 wheel properties inline skate wheels series stratic lip material synthetic fibre fabric specification nylon inner material synthetic fiber material properties water res