29L / 65L Expandable Cargo Pack The Vandal backpack features a water-resistant main compartment which can be used in either "roll-top" mode, or in the traditional "flap-down" configuration. A key feature of the Vandal backpack is it's ability to quickly double in size from 1,800 cu.in. to 4,000 cu.in. when needed for extra cargo carrying capacity. The Vandal also features multiple weatherproof compartments, urethane coated zippers, waterproof materials, and a carbon fiber reinforced internal frame suspension system. Front zippered pocket fits most 15in laptop computers or any tablet, a 17in laptop can fit in the rear rolltop compartment. Made in the USA with a lifetime warranty.