Travel backpack trolley backpack suitable for unisex colour blue style casual capacity 51 litres weight 24 kg height 55 cm width 40 cm depth 25 cm features chest strap padded back address label with feet internal pockets inside zip compartment mesh pocket outside pockets front pocket additional fastenings internal compression straps straps ergonomic shoulder straps padded shoulder strap tuck away harness main compartment feature flip open main co