Headgear for a respiratory mask

A headgear for a respiratory mask, the headgear comprising:

• a single tubular strap comprising a first end, a second end, and a length therebetween;
• and
• a first and second substrate extending respectively in the first and second ends of the strap, wherein each of the first and second substrates comprises a corresponding locking geometry configured to secure the strap on the first or second substrate.

A headgear for a respiratory mask, the headgear comprising:

• a single tubular strap comprising a first strap end, a second strap end, and a length therebetween;
• and
• a resilient core housed within the strap, wherein the resilient core comprises a first core end and a second core end.

A headgear for a respiratory mask, the headgear comprising:

• a pair of straps adjustably coupled to each other;
• and
• a buckle comprising a first end and a second end, wherein the buckle comprises an adjustment mechanism at each of the first and second ends to adjustably couple to a corresponding one of the pair of straps such that the pair of straps are adjustable coupled to each other, and wherein each adjustment mechanism comprises a pair of rotatable posts.