The Rambler

Trail the cabal of San Francisco bike commuters and you'll see one bag pop up more than most: Mission Workshop. Since its launch in 2009 by the founders of Chrome Bags, our neighbors at Mission Workshop have quickly become one of the most respected names in carry. Though created first for bike commuters, Mission Workshop's bags are also perfect for photographers, adventure seekers, and gear heads looking for a bag that can expand to twice its initial size and be rolled down tighter than one of Jiro's sushi rolls.

DIMENSIONS: - Measures: 13'' x 19'' x 5'' inches - Capacity: 1,350 cu.in. (22 L) expands to 2,700 cu.in. (44 L) - Bag weight: 3.7lbs / 1.65Kg

- Waterproof fabric - Urethane coated zippers

- Weatherproof main compartment can be used in either a "roll-top" mode, or in a traditional "flap-down" configuration - Can double in size from 1,350 cu.in. to 2,700 cu.in. when needed for extra cargo carrying capacity - Urethane coated zippers - Carbon fiber reinforced internal frame suspension system - Front zippered pocket fits most 13in laptop computers or any tablet - Rear rolltop compartment can fit up to a 17in laptop

The Rambler has a sleek profile that can quickly double from 1,350 cu.in. to 2,700 cu.in. The weatherproof main compartment can be used in either a "roll-top" mode or in a traditional "flap-down" configuration. The breast strap keeps the bag pretty flush against your back. If you want a belt strap, you can purchase that separately on Mission Workshop's website. The side compartments are great for quickly storing the gear you use most. In summation, the Rambler is voluminous.