sleepyinwi, the
Oracle fits somewhat like a scuba mouthpiece, in your mouth only...not covering the nose at all. Well, it's not
exactly a scuba mouthpiece fit, but that describes it more so than any other kind of
cpap mask. It's not like a full face mask at all.
With the
Oracle, one flap is in your mouth, between the front of your teeth and behind your lips. The outer flap is across the outside of your mouth, like a big patch. You might want to click the
"Search" button at the top of this page and look for the word
Oracle in previous posts. It's a "love it" or "hate it" kind of interface. Takes a LOT of heated humidification to keep it from drying the mouth out pretty badly, imho. I have an
Oracle but rarely use it...have yet to make it a whole night through with the
Oracle before changing back to my more comfortable Ultra
Mirage FF mask.
The
Oracle is purely for mouth breathing. You're not supposed to breathe through your nose at all when wearing it. In fact, one of the biggest problems with using the
Oracle, for me anyway, was nose-leaks....air snorting out the nose.
Fisher and Paykel provides some noseplugs with the
Oracle. Those nose plugs are rather uncomfortable, imho, having to be wedged up tightly into the nostrils to withstand air snort leaks.