POSITIONING AND STABILIZING STRUCTURE FOR A PATIENT INTERFACE

The present invention relates to a patient interface for sealed delivery of a flow of air comprising: a plenum chamber including a plenum chamber inlet port; a seal-forming structure having a hole formed therein such that the flow of air at said therapeutic pressure is delivered to at least an entrance to the patient's nares; a positioning and stabilising structure constructed and arranged so that at least a portion overlies a region of the patient's head superior to an otobasion superior of the patient's head in use, wherein the positioning and stabilizing structure comprises a one-piece knitted headgear strap of a single piece of material; wherein the knitted headgear strap includes at least one first area having a first knit structure; at least one second area having a second mesh knit structure forming at least one ventilation area having increased flexibility as compared to the first area; and at least one third area having a pique knit structure.