Material: Ordered from waterproof high-density canvas and crazy horse leather (real leather), durable and retro.Dimension (H x L x W): 42 x 31 x 12 CM / 16.5 x 12.2 x 4.7 inches, weight: 1.1 kg; fits most 15.6 "laptop, A4 paper and iPad.Structure: 1 main zip compartment, 1 open pocket on the front, 2 layers inside, adjustable shoulder straps, double zip, Upgraded is more durable than before.Practical Design: Two magnetic quick-release fasteners for easy operation, lexible laptop strap with velcro design to provide comprehensive protection for your laptop; adjustable shoulder straps can be adjusted to different heights and body sizes.Application: Professional laptop compartment design, to provide comprehensive protection for your laptop. Suitable for shopping, excursion, school as daypack, school bag, laptop bag, picnic bag, travel bag etc.