Laptop backpack daypack suitable for unisex colour blue capacity 235 litres weight 16 kg height 48 cm width 39 cm depth 26 cm max laptop size 173 inch size of laptop pocket 42x 28 x 4 5 cm features key holder water bottle pocket padded back trolley attachment internal pockets mesh pocket inside zip compartment tablet compartment document sleeve mobile phone pocket mp3 player pocket laptop pocket inside pocket outside pockets front pocket side p