Abstract: An impact system features an integral stored gas inflation source augmented by an ejector which entrains ambient air to rapidly deploy an inflate a safety cushion. The cushion has a plurality of chambers and each chamber is interconnected to an adjacent chamber by valves connected in opposing directions. When a particular cushion chamber is impacted, gas in the impacted chamber is forced via the valve arrangement into an adjacent lower pressure chamber. Upon the impacting object being removed from the cushion, the valve arrangement permits a reverse flow of gas to equilibrate the pressure in the adjacent chambers whereby the system is ready for accepting a subsequent impact without the need for reinflating the cushion. The system is of a size and weight so as to be within the limits of portability by a minimum of using personnel without being otherwise assisted.