SEAT AIRBAG

An assembly includes a seatback. The assembly includes a first airbag and a second airbag, each inflatable to an inflated position spaced from each other at the seatback and abutting each other in front of and spaced from the seatback. The assembly includes a sheet extending from the first airbag to the second airbag in front of where the first airbag abuts the second airbag in the inflated positions.