Travel backpack trolley backpack suitable for unisex colour blue style casual capacity 77 litres weight 32 kg height 66 cm width 39 cm depth 29 cm features with feet reflective elements chest strap hip strap outside pockets front pocket zip compartment on the back zip pocket additional fastenings internal compression straps straps compression straps tuck away harness ergonomic shoulder straps padded shoulder strap main compartment feature flip ope