The invention relates to a removable suspended device which serves as both a head rest and a head restraint for the passenger of a vehicle. The invention is essentially characterized in that the device is suspended in space such that it can move without any direct contact being established between the supporting area and the seat, thereby maintaining the vertical position of both the head and the neck. The preferred embodiment of the invention includes a rigid suspension element (6) which is generally secured to the highest part (7) of a seat and from which the main body (MB) of the device is suspended. The lower occipital region of the head is supported by the lower area of the main body of the device (2). The head is further restrained by means of a front area (4) restricting forward movement and two vertical side areas restricting side movements. The aim of the invention is to improve a passenger's quality of rest and sleep, to prevent neck discomfort and injury and to provide increased safety in the event of an accident or a sudden vehicle maneuver.