A foldable push chair comprises a central chassis assembly defining a central axis extending substantially perpendicularly to a normal direction of travel of the push chair, the push chair has at least three wheel supporting legs extending from the central chassis and rotatable about the central axis between a folded and unfolded state, in the unfolded state at least one wheel supporting leg extending in a forward direction and at least one wheel supporting leg extending in a rearward direction, the forwardly and rearwardly extending wheel supporting legs being coupled together such that they rotate in opposite directions around the central axis during a folding or unfolding operation, latching means engagable with at least one wheel supporting leg and the central chassis or handle assembly for ensuring the push chair can be latched in either or both of an unfolded state or a folded state, energy storage means associated with at least one wheel supporting leg and the central chassis or handle assembly, configurable to be loaded with energy either: a) when the push chair is changed from a folded state to an unfolded state, or b) when the push chair is changed from a unfolded state to a folded state; when the energy storage means is at least partially loaded with energy at least some of the energy stored in the energy storage means being used to assist in either: a) folding the push chair, or b) unfolding the push chair respectively when the latching mechanism is released.