A folding stroller with changeable seating positions two infants or children is provided. The seating positions for two children may include side-by-side, with the seats positioned to be transverse to the direction of travel of the stroller, with seats facing the same or facing in opposite directions. Seating positions may also include in-line front-to-rear, facing forward or backward; side-by-side facing forward or backward. At least one seat may be provided with a reclining mechanism in which the seat may be reclined between a first position and a second position such that the center of mass of the seat remains substantially aligned with a vertical axis of the stroller.