Laptop backpack trolley backpack suitable for unisex colour grey style business capacity 30 litres weight 26 kg height 54 cm width 40 cm depth 23 cm max laptop size 173 inch size of laptop pocket 42 x 28 x 4 5 cm features key holder trolley attachment pen holder organiser padded back internal pockets padded laptop compartment mobile phone pocket tablet compartment outside pockets front pocket straps ergonomic shoulder straps main compartment