Headgear for infant respiratory therapy interface

A patient interface assembly, comprising:

• a patient interface configured to deliver breathing gases to an airway of a patient;
• a headgear configured to support the patient interface, comprising:
• a front portion comprising at least one strap, the at least one strap configured to be positioned in an anterior region of a patient's head, the front portion configured to extend from a first lateral side to a second lateral side of the patient's head;
• a rear portion configured to extend around a posterior region of the patient's head from the first lateral side to the second lateral side of the patient's head, the rear portion comprising:
• a central section;
• and
• a side strap extending from the central section and configured to attach to the front portion;
• a midline strap configured to extend from the rear portion over a top of the patient's head in a forward-rearward direction and attach to the front portion, the midline strap being unitary with the rear portion;
• a junction between the midline strap and the rear portion, the junction comprising:
• a first notch at a first side of the junction;
• and
• a second notch at a second side of the junction, wherein the second side is located opposite from the first side;
• an interface securement system;
• and
• a two-part connection;
• wherein a first part of the two-part connection is located on the front portion and a second part of the two-part connection is located on the patient interface;
• and
• wherein each of the first notch and the second notch comprises:
• a first portion extending inwardly at an end of the midline strap to locally reduce a width of the end of the midline strap;
• and
• a second portion extending into the rear portion.