Quattro Air Full Face Headgear strap - Standard size by TOMOON

Quattro Air Full Face Headgear - Standard -, No Color, Size Standard Replacement headgear for the ResMed Quattro Air and Quattro Air for Her Full Face CPAP mask. ??: This headgear will not work on the Original Quattro mask.  Note: Your mask comes with the medium size headgear. Remember replacing your CPAP Mask Headgear every 6 months is the standard schedule and will ensure better fit and seal of your CPAP Mask.