I forgot to mention that I have a size small standard mask.
All I know is that for the first time since starting cpap I haven't taken the mask off because it was leaking and driving me nuts.
I only take off to go to bathroom or to get something to drink. Than I go back to sleep.
I told my husband I should have him take pictures when I am asleep on my side so you can see how much of a problem leaks where for me before I tried this and it worked. Will post them if I remember or can get him to do that for me.