Fits perfectly. I tried the blue headgear but it was so long that the sides rubbed across the top of my ears and was very irritating. My only problem is that I use the blue N20 Airfit frame with the "For Her" headgear because I am using an N20 MEDIUM mask which I am told will not fit into the N20 "for her" frame. I am concerned because I don't see anywhere that I can purchase a separate new frame (blue) when I need to replace it. Any suggestions?
