Laptop backpack daypack suitable for unisex colour black style casual capacity 27 litres weight 071 kg height 48 cm width 31 cm depth 165 cm max laptop size 17 inch size of laptop pocket 35 x 27 x 2 5 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