Abstract: An inflatable shoulder belt webbing system and a method for inflating the inflatable shoulder belt webbing system having a buckle, a web loop having a tongue that is selectively engaged by the buckle when the tongue is secured to the buckle and is disengaged when the tongue is removed from the buckle, a lap belt member retained by the web loop, a shoulder belt member having an inflatable webbing portion being contained within the shoulder belt member, the shoulder belt member being retained by the web loop, a tubular member rigidly fixed externally to an outer edge of the web loop and having one end in sealed communication with the inflatable webbing portion, a source of inflation gas, and a manifold rigidly fixed externally to the buckle and having an outlet providing a conduit between the source of inflation gas and the tubular member when the tongue is secured to the buckle.