VEHICLE SEAT

A vehicle seat mounted with an occupant restraint device, the vehicle seat includes: a seat cushion frame; a seatback frame including a seatback side frame extending in a seat vertical direction at a seat width direction end portion of the seatback frame, the seatback frame being swingable at a seat rear end side of the seat cushion frame, and the seatback frame extending from the seat rear end side toward a seat upper side; a metal inflating body disposed along the seatback side frame, and configured so as to be stretched out toward a seat lower side such that a lower end of the metal inflating body abuts a vehicle floor surface; and a drive member configured to stretch out the metal inflating body in a case in which a vehicle collision at a seat front side occurs or the vehicle collision at the seat front side has been predicted.