A seat assembly includes a seat back that is pivotable from an upright use position to a stowed position. A head restraint includes first and second portions, each of which are movable from a respective upright use position to a respective stowed position. Each of the portions includes a respective contact surface for contacting an occupant of the seat assembly. A release mechanism is configured to facilitate movement of the first and second portions from their respective upright use positions to their respective stowed positions. An automatic return mechanism is provided to automatically return the first and second portions from their respective stowed positions to their respective upright use positions when the seat back is pivoted from its stowed position to its upright use position.