Headgear for a patient interface

The present inventions seeks to address problems of the prior art relating to comfort, cost, efficacy, ease of use and manufacturability. A positioning and stabilising structure comprising at least one gas delivery tube to receive the flow of air from a connection port on top of the patient's head and to deliver the flow of air to the entrance of the patient's airways via the seal-forming structure, the at least one gas delivery tube comprising a tube wall configured to overlie the patient's head from a superior portion of the patient's head to the seal forming structure passing between an eye and an ear of the patient. A tab is connected to the tube wall and located superior to the otobasion superior of the patient's head in use. An eyelet formed in the tab and located posteriorl to the tube wall in use. Furthermore a trough formed in the tab and located posteriorly to the eyelet; and a strap constructed and arranged to contact, in use, a region of the patient's head inferior to or overlaying an occipital bone of the patient's head, the strap being configured to connect to and between the eyelets of the pair of gas delivery tubes and to lie within the troughs formed in the tabs in use.