Gas bag assembly for a vehicle passenger retention system

The gas bag arrangement has a gas bag (1) which has an inflatable chamber and an opening (111, 111a, 111b, 111c). A cover (2) is provided for the opening of the gas bag and at least partly covers a second opening (22, 22a, 22b). The openings are arranged so the chamber of the gas bag (1) is accessible through the openings. An independent claim is included for a vehicle with a gas bag arrangement.