The invention air bag (6) of the passage area (8) to hide relates to unavoidable internal panel ring (1), a flat carrier (2) and the passage area textile planar structure to cover (8) at least in part (textile planar foramtion ; includes 3), wherein the textile flat structure (textile planar foramtion; 3) is the airbag (6) along the tear line (5) is defined in order to develop the textile planar structure (textile planar foramtion; cut 3) at least comprises one of the initial weakened part 4 to the tear line (5) the fabric is planar structure (planar textile foramtion; 3) is formed in at least one direction along the first direction (x- direction) of, the textile planar structure (planar textile foramtion; 3) the more power to cut a first direction is smaller than any other direction of the textile planar structure (planar textile foramtion). A controlled opening of the air bag cover is achieved by the present invention, the surrounding components, particularly the prevention of damage to the windshield. In particular, the opening process is ensured to be employed in the air bag firing (cut power to the control).