Abstract: The present technology relates to a patient interface for delivering breathable gas to a patient. The patient interface may comprise a cushion module including a plenum chamber. The plenum chamber may be substantially flexible. The plenum chamber may be configured so that a superior portion is able to move relative to an inferior portion in order to adjust an orientation of a superior portion of a seal-forming structure relative to an inferior portion of the seal-forming structure. The patient interface may further comprise a positioning and stabilising structure to provide a force to hold the cushion module in a therapeutically effective position on the patient's head. The positioning and stabilising structure may comprise a strap arranged so that the strap overlies the cushion module, the strap passes around the sides of the patient's head inferior to the patient's ears, and the strap overlies a posterior region of the patient's neck.

Abstract: A positioning and stabilising structure for a patient interface for delivery of a supply of pressurized air or breathable gas to a patient's airways may include a first fabric layer; a second fabric layer; a central fabric layer between the first fabric layer and the second fabric layer. The central fabric layer, the first fabric and the second fabric may be warp/weft knitted together.

Abstract: A positioning and stabilising structure for a patient interface for delivery of a supply of pressurized air or breathable gas to a patient's airways may include a first fabric layer; a second fabric layer; a central fabric layer between the first fabric layer and the second fabric layer. The central fabric layer, the first fabric and the second fabric may be warp/weft knitted together.