An inflatable airbag system can be configured to be mounted at a frontal region of a vehicle. The inflatable airbag system includes an airbag comprising a center cushion and a pair of side cushions each coupled to the center cushion on opposing sides of the center cushion. The side cushions can each have a triangular shape with an apex extending rearward further than at least a portion of an occupant-facing surface of the center cushion. The side cushions can be oriented with respect to each other at opposing angles relative to the center cushion such that an overall geometrical shape of the airbag is wider at a forward reaction base area of the airbag than at a rearward occupant-receiving area.