Abstract: Vehicle seat is movably mounted on a slide rail and having attachment points for a safety belt comprising a lap belt portion and a shoulder belt portion arranged in the seat so that the attachment points of the lap belt are on both sides of the seat and a retractor roll of the safety belt is attached to the frame of a horizontal seat part. The shoulder belt of the safety belt extends from the roll along a backrest upwards and continues via a guide at the upper end of the backrest to the front of the backrest. The retractor roll has a support piece projecting below a part of the slide rail so that it can move in the longitudinal direction of the slide rail as the seat moves back and forth, but it is prevented from being lifted upwards.