A head restraint assembly includes a base portion including a first post portion extending in a vertical direction. The assembly also includes a head restraint operatively coupled to the base portion. The assembly further includes a lock slide manually moveable between a locked condition and an unlocked condition, the locked condition disposing a portion of the lock slide within one of a plurality of recesses of the first post portion, the unlocked condition defined by removal of the lock slide from the plurality of recesses to allow adjustment of the head restraint in the vertical direction.