Abstract: A patient interface is provided for use with a respiratory support apparatus, and comprises: a. a cushion at least partially defining an internal cavity, the cushion comprising a pair of opposing cushion side walls and a sealing flange arranged to seal against the face of the patient; b. a gases inlet in fluid communication with the internal cavity; c. a tether; wherein the tether extends substantially laterally across the cushion inside the internal cavity between the pair of opposing cushion side walls, the tether being mounted to the cushion side walls. The tether is configured to allow the cushion to compress when subject to lateral forces, for example when a patient is side sleeping. The tether is configured to resist laterally outward deformation of the cushion.

Abstract: Headgear for securing a patient interface to patient, the headgear having a base layer forming a body of the headgear, and a headband region. The headband region has an outer engagement layer that at least partly overlaps a lower portion of the base layer with the outer engagement layer being fused to an underlying portion of the base layer. The headband region has areas of fused material and areas of unfused material, the non-fused areas at least in part defining connection zones for releasably securing connectors to the headgear.

Abstract: A patient interface is provided for use with a respiratory support apparatus, and comprises: a. a cushion at least partially defining an internal cavity, the cushion comprising a pair of opposing cushion side walls and a sealing flange arranged to seal against the face of the patient; b. a gases inlet in fluid communication with the internal cavity; c. a tether; wherein the tether extends substantially laterally across the cushion inside the internal cavity between the pair of opposing cushion side walls, the tether being mounted to the cushion side walls. The tether is configured to allow the cushion to compress when subject to lateral forces, for example when a patient is side sleeping. The tether is configured to resist laterally outward deformation of the cushion.