Laptop backpack trolley backpack suitable for unisex colour blue style business capacity 33 litres weight 27 kg height 52 cm width 34 cm depth 20 cm max laptop size 156 inch features key holder pen holder organiser padded back internal pockets padded laptop compartment mobile phone pocket outside pockets front pocket mesh side pockets additional fastenings internal compression straps straps tuck away harness main compartment feature flip open