The more walking versus jogging you do, and the smoother the surfaces- use a smaller wheel. The size of the wheel has nothing at all to do with stability. It is then just a matter of taking the wheels off, if you need to make it smaller to fit into a trunk. You need to request this at the time you order you stroller, because this is not an add-on piece. The handle is all in one piece.
Little ones tend to fall asleep from the motion- which can be a BIG help for colicky babies.
Bigger kids get a kick out of having special time with Mom or Dad, and sightseeing as they roll along. And even though you are pushing' it, the stroller is theirs. We meet all the federal regulations for strollers, and the tripod shape is especially stable. There are seatbelts sewn into the seats. These guarantees cover everything except the wheels, seat and canopy, tires and tubes, which all carry a one year warranty.