Laptop backpack daypack suitable for unisex colour black capacity 23 litres weight 103 kg height 51 cm width 31 cm depth 135 cm max laptop size 15 inch size of laptop pocket 35 x 28 x 3 cm features organiser chest strap padded back key holder emergency whistle internal pockets laptop pocket inside zip compartment mesh pocket inside pocket outside pockets zip pocket side pocket additional fastenings gear attachment points straps ergonomic shou