500 D poly Unique curved zippered opening Large pocket with interior organization Large main compartment Two compression straps across the body Ergonomic shoulder straps with mesh valuables pocket Two exterior mesh pockets Hydration pocket Integrated padded luggage trolley pass through on back Laptop sleeve: 9.8 h x 11.8 w; fits most 15 laptops Dimensions: 20 h x 11.8 w x 7 d Capacity: 2 013 cu.in./33 L Weight: 2.14 lbs./0.97 kg Note: Bags not intended for use by children 12 and under.**