Trolley bag type of baggage hard shell suitcase approximate size m suitable for adults colour grey capacity 38 litres weight 28 kg height 58 cm width 40 cm depth 23 cm wheels 4 wheel properties double wheels 360 rotating series hauptstadtkoffer x klln material plastic fabric specification abs inner material synthetic fiber material properties waterproof lockable integrated lock combination lock tsa lock main compartment feature flip ope