Bugaboo Bee Self Standing ExtensionThe Bugaboo Bee self stand extension is a very handy extension for easy and convenient storage of your stroller, thanks to its automatic click in system. You can fold your stroller and put it in a stand upright position, whether in the hallway at home, on public transportation, or while enjoying a coffee at a caf. This extension attaches to the stroller chassis in a way that you can go from strolling to automatically clicking it into the stand upright