A vehicle seat

A vehicle seat configured to support an occupant in a sitting position, the seat comprising:

• a squab (27), a backrest (28), and an airbag unit;
• the airbag unit comprising an inflatable bag (1) provided in an initially rolled and/or folded airbag package, and an inflator (34) actuable to direct inflating gas into the airbag to inflate the airbag into an inflated configuration;
• the airbag comprising an inflatable chamber (8, 9;
• 208);
• wherein the airbag further comprises an inflatable guide, connected to the inflator and the inflatable chamber, the airbag being mounted and configured such that, upon actuation of said inflator inflate the airbag, said inflatable guide is at least partially inflated before the inflatable chamber (8. 9;
• 208), thereby initially urging the inflatable chamber away from the backrest of the seat;
• the airbag being configured such that after the inflatable guide is at least partially inflated, the inflatable chamber inflates into a deployed position in which it defines an inflated shroud which extends over said sitting position and provides lateral protection to said occupant of the seat in said sitting position.