Abstract: A baby stroller having plural sets of replaceable cushions, where each set of cushions has a preformed contour that conforms to the shape of a chair occupant of a different height. One set of cushions may be replaced with a set having a different preformed contour as the size of the chair occupant changes. The adjoining edges of the cushions are overlapping to avoid the formation of a gap between the cushions. The chair may be collapsible, and the cushions may be joined so that the chair is substantially flat when collapsed.