A seat includes a seatback, two armrest portions, and two airbags. Each armrest portion is rotatably coupled to the seatback about a generally vertical axis from a stowed position elongated in a forward direction to a deployed position extending in front of the seatback. Each airbag is fixed to one of the armrest portions and inflatable to an inflated position in which one of the airbags is disposed in front of the other of the airbags relative to the seatback.