Airfit F20 Mask Headwear works well after fine adjustment
"I have a fairly small sized head. Even though I purchased the smaller headwear unit I have to use a clip to raise the height of the headgear so that it doesn’t pinch the bridge of my nose and block mym ability to breath through my nose. It takes several small adjustments before a good seal of the full face mask could be achieved. The headwear would be improved if it had an adjustable top strap and a method to more easily and evenly adjust the length of the straps."
