Back Seat Bar BagAdjustable sissy bar strap system that easily attaches bag to your motorcycle's seat, luggage rack or sissy bar Backrest pad can be adjusted for additional comfort for the passenger or driver Include detachable backpack straps for easy off the bike jaunts Include another large top loading main compartment with internal organizer pocket Five external Pockets, two of which can be expanded for added capacity Two mounting systems, the mount under seat