Made from tough DuPont Cordura, the Rack Sack has been designed to complement the Brompton's rear rack perfectly. With the sides lined for stiffness, the Rack Sack offers 16 litres of storage without obscuring any Brompton lighting system. It is attached to the bike via straps, clips and Velcro around the suspension bung, the rear rack and the seat pillar, offering a highly secure, shower-proof solution. Comes supplied with a shoulder strap.