The Bugaboo Bee Self-Stand Extension has two major consumer benefits: Easy and convenient storage: when your stroller is folded, the Bugaboo Bee Self-Stand Extension allows it to stand upright for convenient storage in a hallway at home, on public transportation, or in a busy café. Automatically clicks into place: The extension attaches to your chassis and is positioned out of the way while you stroll. When you fold your Bugaboo Bee, the clever mechanism automatically clicks the stand into position ready for use.