A VEHICLE SEAT

There is proposed a vehicle seat configured to support an occupant (42) in a sitting position, the seat comprising: a squab (27), a backrest (28), and an airbag unit. The airbag unit comprises an inflatable airbag (1) provided in an initially rolled and/or folded airbag package (33), and an inflator (34) actuable to direct inflating gas into the airbag (1) to inflate the airbag into an inflated configuration. The airbag (1) comprises a pair of inflatable chambers (8, 9) which are physically connected to one another via a connecting interface (17), and are fluidly isolated from one another. The airbag unit is mounted and configured such that, upon actuation of said inflator (34) to inflate the airbag (1), said inflatable chambers (8, 9) inflate into respective deployed positions in which they: i) extend forwardly from respective opposing and laterally spaced-apart side regions of said backrest (28); and ii) extend upwardly, and laterally inwardly across an uppermost region of the seat towards said connecting interface (17), so as to thereby cooperate to define an inflated shroud around at least an uppermost region of the backrest (28) so as to extend over said sitting position and provide lateral protection to a said occupant (42) of the seat in said sitting position.