Two piles the side air bag for the motor vehicle which takes the form of three dimensional air bag which at the fabric layer (2,3) which it can be brought together was formed (1) is disclosed. The pile when it is put level, at least suitable wide common piled territory causes the fabric layer (2,3) which it can be brought together. At least, the insertion being packed part (42,43) which was formed with one side of one gusset formation insertion or fabric layer (2,3) or the one part or the plural parts of the both fabric, is piled up and exceeds the territory and is provided when it extends. The air bag (1), the air bag (1) has with the inflation possible territory of the upper approaching and the air bag (1) the inflation possible territory of the lower part approaching. Two inflation possible territories, when the air bag is made to inflate, in order either one of the inflation possible territory to possess the thickness which is smaller than thickness of one side, are separated by the portion of the air bag which is restrained.
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