Laptop backpack daypack colour black weight 153 kg height 515 cm width 388 cm depth 284 cm max laptop size 17 inch size of laptop pocket 40 1 x 29 2 x 4 8 cm features organiser padded back internal pockets laptop pocket document sleeve outside pockets front pocket side pocket bag feature suitable as cabin luggage iata norm material synthetic fiber fabric specification ballistic nylon inner material synthetic fibre material properties water