Passport Bike Packing Seat Saddle BagLightweight and aerodynamic saddle packs that have been designed to securely be attached under the saddle of your bike. Which means the saddle packs are self supporting. There is no need to add a rear rack to your bike keeping weight to a minimum. The packs are designed to hold clothes and other items you want to keep safe and dry. The roll top design means you can customise the size of your pack. The saddle packs are available in two different sizes