The invention is designed to be used for the large outdoor fires such as fires on the U. In one form, the airbag, when inflating, has a normally open vent hole disposed in a rear panel in a region extending toward the center of a steering wheel from the rim of the steering wheel and an openable vent hole disposed in a region extending toward the outside of the steering wheel from the rim. Therefore, a PCR product can be detected in real time. The support structure also comprises a support element, the support element having a dimension which is larger than the opening, the support element having a fixing hole therethrough, the distance between the fixing hole and the periphery of the support element being non-uniform. In one or more embodiments, multiple texturized polyester weft yarns of denier between 15 and 50 are wound on a single bobbin in a parallel adjacent fashion such that they may be fed into an air jet pick insertion apparatus of an air jet loom to weave a textile that has between 90 to 235 ends per inch cotton warp yarns and between 100 and 765 polyester weft yarns. Also disclosed is a process for making such apparatus.