Abstract: A restraint system is provided for helping to protect first and second occupants of a vehicle having a roof and a cabin with first and second seats for receiving the first and second occupants. The restraint system includes first and second airbags mounted to the vehicle roof. Each of the first and second airbags has a stored condition and is inflatable to a deployed condition aligned with the respective first and second occupants. The deployed first and second airbags are spaced from one another in an inboard-outboard direction. A tether is connected to the first and second airbags for limiting relative inboard-outboard movement between the airbags in response to occupant penetration.