Hopnel sewn products has a carrying solution for riders with the Collapsible Rack Bag (H50-101BK). This 10 in. x 11 in. x 3 in. travel bag has a shoulder strap for easy carry and can be expanded from 2 in. to 22 in. to fit larger purchases, all while easily strapping to your luggage rack to get it home. When compact this bag has three zippered pockets for convenience, plus the expansion pocket allowing expansion to 22 in. Comes with reinforced base for a secure fit on your luggage rack. There are two side zipper pockets that are 11 in. x 6 ¼ in. plus a top opening storage pocket of 10 in. x 11 in. x 2 in. to handle travel needs and small purchases. A full zipper expands the collapsible bag by 20 in. giving a large 10 in. x 11 in. x 20 in. luggage bag compartment, includes rack tie down straps.
Link: Big Bike Parts