The Rambler Expandable Cargo Pack

The Rambler 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 Rambler backpack is it's ability to quickly double in size from 1,350 cu.in. to 2,700 cu.in. when needed for extra cargo carrying capacity.

The Rambler 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.