A head restraint having a housing which is at least partially movable relative to a supporting rod, by which the head restraint is arranged on the backrest of a vehicle seat, toward and away from the head of the occupant of the seat. A slide is provided on the housing, with a positive connecting and/or non-positive connecting device along the longitudinal extent thereof, which can be brought into engagement with a respective locking device, and as a result can secure the housing in the respective position thereof as desired.