I really wanted to give more stars and… I really wanted to give more stars and maybe this would work with bigger masks… I have just a nasal mask and this liner bunched up underneath and filled my mask making it hard to breathe. I tried adjusting it but there was just too much material.

The mask is a great idea but… The mask is a great idea but unfortunately, using the liner distorted the shape of the membrane that creates a seal on the face. The result was a unacceptably high level of air leakage even at relatively low levels of air pressure. It may work more effectively with other mask designs but not for AirFit F20 size M. YMMV.

The product inhappy customer n on the Facebook… The product information on the Facebook page was accurate and NOT misleading. The price is very reasonable, I decided to try the product due to the write up on FB and I am more than happy with it. It arrived in a couple of days and is exactly what was advertised and it works

Difficult to get it to fit right We could not get the fabric to fit on our masks in a way that made it comfortable and prevented leaks . The fabric seemed too stiff and my husband’s large face mask just folded in weird. My smaller mask seem to fit better but leaked around the edges which kept me awake.

I am always skeptical of getting… I am always skeptical of getting anything off the Internet. It tends not to be what it supposed to be. So I got tired of feeling air leaking out and hit my eye. So I thought always try it one more time. It got rid of all the leakage to where I sleep better, I definitely recommend it