Looking to carry more on your Brompton? Expertly engineered for the Advance Roller Rack. Stable. Durable. Waterresistant and easy to attach with four quick fixings. A backpack that works in two directions, this 90° rotation allows us to create a bag that is spacious enough to hold all your daily gear and comfortable enough to carry. Waterproof construction from a specially engineered recycled fabric ensures you're ready for your next adventure.