Breathing mask for supplying a breathing gas to a user of a mask includes a sealing lip to seal a mask support zone, a mask base body to form a mask interior chamber and a connector to connect at least one breathing gas line. The mask base body and/or the connector is provided with at least one de-coupling structure formed of an elastomer material. The de-coupling structure allows a relative movement between a mask body-sided circumferential foot portion of the sealing lip and the breathing gas line in at a tilt angle of at least 5°.