Computer Backpack: Backpack with telescopic hidden pull rod, multi level adjustment, the pull rod is 40cm high, it can be pulled by the pull rod or carried on the backPremium Material: Laptop backpack is made of quality Oxford cloth material, wear resistant and waterproof, with firm stitching, strong and not easy to tear, ensuring long term useLarge Size Silent Wheels: Rolling laptop briefcase has built in silent bearings, easy to push and pull on the road without jammingLarge Capacity: Trolley business cabin bag has multiple compartments and pockets to keep your items organized and easy to find, and the zipper is smooth and easy to open and closeWide Application: It can be used as a computer bag or carry on luggage bag, suitable for business, travel, overnight, camping, etc Specification: Material: Oxford ClothProduct Size: 50cmx34cmx22cm/19.69inchx13.39inchx8.66inch Package Includes: 1 Laptop Backpack Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.