It is just a little corner of memory foam from my bed topper the only memory foam I could find laying around - the other foam I tried was a specialty foam I used for something else and it did not work well at all.
This piece is about 1 inch tall and the 3 sides are about 1/2 inch each. I just place it at the top of my F10 (FFM) where the silicone meets the bridge of my nose with the point/edge of the foam in the point of the mask and the flat side of the foam facing my nose bridge, then adjust the straps until no tighter than necessary to get the leaks to stop. Instant 0% leaks all night!
My next step is to try to find someplace to buy a small sheet of 1/2 inch thick memory foam. They seem to want to sell it in 1 inch and up - which is thicker than I think I need. I will then carefully cut (not crudely like this piece) a "gasket" the shape of the edge of the F10 - similar to the mask liners just without the large flap outside that tends to irritate my eyes. I actually think a 1/4 inch thick piece will be enough and may be more comfortable, but so far I have not found any source that thin.
The strange thing is just putting this little wedge into the bridge location stops the leaks all the way around and the mask feels MUCH more comfortable. I expect it is just that with the bridge cushioned I can adjust the straps tighter and not feel uncomfortable from the mask cutting into the bridge of my nose.
If anyone knows of a source for 1/4 inch or 1/2 inch memory foam, please let me know.
Started CPAP Therapy April 5, 2016
I'd Rather Be Sleeping