The bicycle hand brake is located on top of the stroller where you can easily have access to it and use it when you decide to make a stop. (strollerlab.net)
Some are made to be compatible with a range of infant car safety seats, which snap on top of the stroller, allowing easy transfer from the car. (homeinstitute.com)
Place the Bugaboo seat on top of the stroller frame for storage. (howtoadult.com)