VEHICLE SEAT

A back (1) of a motor vehicle seat has a headrest (8) and a main back portion comprising a frame (2) from which a metal net (4) is suspended by means of springs (5). Rearward movement of the net is limited by straps (3). The net is covered by padding (6) and a fabric or other covering (7). If the back of the seat is subjected to a force in excess of a predetermined force the springs (5) and/or the straps (3) yield, permitting the net (4) to move rearwardly. Thus, in a rear impact the torso of a person sitting on the seat will move rearwardly relative to the seat, bringing the head of the person into contact with the headrest (8), thus minimising any risk of whiplash neck injury. The springs or straps may be connected to the frame by connectors (9) which respond to a sensed deceleration in excess of a predetermined limit to release the springs (5) or straps (3).