An airbag can include a covering that surrounds an interior space that can be filled with gas, a gas-conducting pipe which is stretched longitudinally along a direction of extent, and a contact region of the covering that surrounds the inflow opening and encloses the gas-conducting pipe in a sealing manner along a circumferential direction of the gas-conducting pipe that encircles the direction of extent. A protective layer of the covering can be arranged, at least in some sections in the interior space of the covering, with respect to the gas-conducting pipe so that damage to the covering during filling of the interior space of the covering with hot gas can be prevented by the protective layer. At least one fastening region of the protective layer, via which the protective layer can be connected to the covering, can be connected to the contact region of the covering.