A head protection assembly which can be secured to a seat includes a plurality of chambers or pads, inflated to a pre-selected pressure which provide protection of the occupant of the seat from side and rear impacts. The head protection assembly is placed in a seat in lateral alignment with the side of the head of an occupant of the seat and adjusted to restrain movements of the head caused by vehicle collisions. The chambers or pads are inflated or deflated to permit the chambers or pads to be adjusted to the size of the occupant of the seat. The assembly includes a device to indicate the correct inflation pressure. The chambers or pads are fluidly interconnected to distribute fluid throughout the assembly to help absorb the impact of the head of the occupant. The chambers or pads can be secured to an existing seat to afford additional protection or can be incorporated into the seat during the manufacture of the seat. An inflatable body restraint can also be provided to help protect the occupant of the seat.