Both bags together measures approximately 30" H X 16" W. Expands to 12" thick. Four pockets on sides
The Big bag has 4 outside pockets you can put all kinds of small stuff into. And all of them zip up, the bag to. This nice travel bag comes with extra heavy duty nylon straps to wrap around your sissy bar. All straps have quick release clips.If you don't have a luggage rack it can rest on your fender. It has a pouch with three straps that slides over your sissy bar all hook and loop adjustable. It has reinforced stitching, so that your things will not get wet while traveling in all weather conditions.