Laptop backpack trolley backpack colour black weight 27 kg height 495 cm width 38 cm depth 23 cm max laptop size 154 inch size of laptop pocket 36 x 30 x 5 cm features organiser internal pockets mp3 player pocket glasses pocket detachable laptop sleeve outside pockets front pocket straps tuck away harness bag feature suitable as cabin luggage iata norm material synthetic fiber inner material synthetic fibre material properties water repellent