Abstract: A patient interface includes a plenum chamber pressurisable to a therapeutic pressure, and a seal-forming structure constructed and arranged to seal with a region of a patient's face surrounding an entrance to a patient's airways. The seal-forming structure is constructed and arranged to maintain the therapeutic pressure in the plenum chamber throughout a patient's respiratory cycle in use. The patient interface also includes a positioning and stabilizing structure configured to hold the seal-forming structure in a therapeutically effective position on a patients head. The positioning and stabilizing structure includes a rear strap arranged to contact an occiput of the patient's head. The rear strap is constructed from a first material is arranged to contact a temporal region of the patient's head, and a second material arranged to contact the occiput of the patients head. The second material is silicone.

Abstract: A patient interface includes a plenum chamber, a seal-forming structure, and a positioning and stabilising structure. The positioning and stabilising structure includes a gas delivery tube to deliver the flow of air to the entrance of the patients airways via the seal-forming structure, and an elongate textile sleeve provided around the gas delivery tube and arranged to be in contact, in use, with the patients face. The sleeve includes a wall with an opening, which allows the patient to view a portion of the gas delivery tube. A strap engaging portion is configured to protrude through the opening of the textile sleeve in use. A clearance exists in a longitudinal direction between an edge of the opening and the strap engaging portion. The clearance allows the gas delivery tube to stretch, in use, without the strap engaging portion contacting the edge of the opening.

Abstract: A patient interface includes a plenum chamber pressurisable to a therapeutic pressure, and a seal-forming structure constructed and arranged to seal with a region of a patient's face surrounding an entrance to a patients airways. The seal-forming structure is constructed and arranged to maintain the therapeutic pressure in the plenum chamber throughout a patients respiratory cycle in use. The patient interface also includes a positioning and stabilizing structure configured to hold the seal-forming structure in a therapeutically effective position on a patients head. The positioning and stabilizing structure includes a rear strap arranged to contact an occiput of the patients head. The rear strap is constructed from a first material is arranged to contact a temporal region of the patients head, and a second material arranged to contact the occiput of the patients head. The second material is silicone.