A patient interface system to treat sleep disordered breathing of a patient with pressurized gas, comprising a patient interface. The patient interface includes a plenum chamber configured to be pressurised above atmospheric pressure in use by the pressurized gas； and a seal-forming structure connected to the plenum chamber and structured to seal against the patient's face around the nose and/or mouth to direct the pressurized gas into the patient's airways during use； and a positioning and stabilising structure configured to hold the seal-forming structure in a sealing position against the patient's face. The positioning and stabilising structure includes at least one strap； at least one cushion formed from a soft, flexible composite material and structured to at least partially conform to the patient's head； and at least one retractor fixedly attached to said at least one cushion. The at least one retractor is connected to the at least one strap and configured to retract the at least one strap without patient actuation to urge the patient interface into the sealing position against the patient's face during use, wherein the at least one strap joins the at least one retractor to the patient interface.
