Laptop backpack daypack suitable for unisex colour black style casual capacity 35 litres weight 082 kg height 52 cm width 345 cm depth 23 cm max laptop size 17 inch size of laptop pocket 38 x 29 x 3 cm features reflective elements organiser pen holder key holder trolley attachment chest strap water bottle pocket padded back internal pockets padded laptop compartment tablet compartment mobile phone pocket mp3 player pocket document sleeve mesh p