A unique flexible hinge member for an instrument panel airbag is formed of a flexible plastic. The flexible hinge member is secured to the under surface of the instrument panel by a welding technique. The instrument panel is formed with a tear seam on its under surface, but no tear seam on its under surface. In one embodiment, the tear seam is h-shaped and two flexible hinge portions are utilized. In another embodiment, the tear seam is u-shaped and a single flexible hinge member is utilized.