THREE-DIMENSIONAL AIR BAG

A three-dimensional air bag includes a first three-dimensional sewn portion in which the main panel and the first side panel portion are sewn together, and a second three-dimensional sewn portion in which the main panel and the second side panel portion are sewn together, a part of the first three-dimensional sewn portion and a part of the second three-dimensional sewn portion are located at an upper surface of the deployed and inflated air bag, a shape of the first three-dimensional sewn portion of the main panel in a natural state is different from a shape of the first three-dimensional sewn portion of the first side panel portion in a natural state, and a shape of the second three-dimensional sewn portion of the main panel in the natural state is different from a shape of the second three-dimensional sewn portion of the second side panel portion in a natural state.