A stroller has a seat assembly with a seat bottom and a seat back that is movable from an upright in-use orientation to a forward folded orientation closer to the seat bottom. A structure such as an arm bar extends across the seat assembly above the seat bottom and in front of the seat back. The structure is in a raised in-use position with the seat back in the in-use orientation. The structure moves from the in-use position to a lowered stowed position closer to the seat bottom when the seat back is moved to the folded forward orientation.