Laptop backpack daypack suitable for unisex colour black style business weight 11 kg height 51 cm width 40 cm depth 16 cm max laptop size 17 inch size of laptop pocket 40 5 x 31 5 x 3 5 cm features pen holder removable accessory bag padded back internal pockets mp3 player pocket laptop pocket outside pockets front pocket straps ergonomic shoulder straps bag feature suitable as cabin luggage iata norm material synthetic fiber fabric specifica