Laptop backpack daypack suitable for unisex colours blue black capacity 25 litres weight 13 kg height 44 cm width 37 cm depth 27 cm max laptop size 156 inch size of laptop pocket 37 x27 x 4 cm features trolley attachment chest strap raincover water bottle pocket pen holder headphone access internal pockets laptop pocket tablet compartment mp3 player pocket mobile phone pocket inside pocket glasses pocket outside pockets front pocket side pocket