Abstract: Two side frames support a seat assembly (25, 31 and 32) for a baby. Each side frame has first and second legs (1 and 2) pivotally connected at adjacent first ends (3 and 4) and a handle shaft (11). When the push chair is erected, with the second ends (5 and 6) of the legs (1 and 2) of each side frame spaced apart, the handle shaft (11) of each side frame is movable between first and second positions in which a handle bar (34) transversely interconnecting the handle shafts (11) is respectively behind the seat assembly (25, 31 and 32), for pushing the baby forwards, and in front of the seat assembly (25, 31 and 32), for pushing the baby backwards. The second leg (2) and the handle shaft (11) of each side frame are also connected by drive means (16 and 17) so that further movement of the handle shaft (11) from its second position to a third position laterally adjacent the first leg (1) is accompanied by corresponding movement of the second leg (2) towards a position laterally adjacent the first leg (1).