SLIDABLE POST ADJACENT ROTATABLE SEAT

An assembly includes a vehicle roof and a vehicle floor spaced from the vehicle roof. The assembly includes a seat supported by the vehicle floor. The seat is rotatable about an axis of rotation from a forward-facing position to a rearward-facing position and the seat being movable along a vehicle-longitudinal axis. The assembly includes a post elongated from the vehicle floor to the vehicle roof. The post is slidable along the vehicle roof and the vehicle floor along the vehicle-longitudinal axis adjacent the seat. The assembly includes an airbag supported by the post.