The seamless SoftEdge Headgear for Quattro Air series CPAP masks features premium rolled-edge fabric with a unique texture that helps improve fit and feels more natural on the face. It should be worn loosely to allow the mask cushion to inflate and adapt to facial contours and movement through the night. The headgear's crown strap sits comfortably at the top of the head, limiting contact with the sensitive areas around the back of the neck. There are no headgear clips required with Quattro Air or Quattro Air For Her masks; instead the headgear slides easily onto loops built into the mask frame. There's no need to re-adjust the headgear every time you put it on, once you've found your fit just slide the headgear on and off the headgear loops as needed. Available in small and standard sizes.