Laptop backpack daypack colour black weight 15 kg height 46 cm width 40 cm depth 18 cm max laptop size 154 inch size of laptop pocket 36 x 30 x 5 cm features key holder organiser internal pockets laptop pocket mobile phone pocket outside pockets front pocket bag feature suitable as cabin luggage iata norm material synthetic fiber fabric specification 840 d nylon inner material synthetic fibre material properties water repellent material seri