Abstract: An air-bag is formed from two super-imposed layers of fabric which define between them at least one inflatable region. A gas supply duct extends into the air-bag. Apertures are formed in the gas supply duct. The gas supply duct is of elongate form, and is formed from a fabric having intersecting warp and weft yarns, the warp and weft yarns being inclined at an angle of between 30° and 60° and (preferably 45°) to the axis of the gas supply duct.

Abstract: An air-bag (1) has a primary gas flow duct (11) leading from a gas generator to one or more zones within the air-bag which are to be inflated. The air-bag has a separate inner gas flow duct (12) mounted within the outer gas flow duct. The inner gas flow duct (12) and the outer gas flow duct (11) have areas (22 and 23) thereof secured together in the region that is to be connected to the gas generator.