I use a Resmed N30i nasal cushion mask. I find it hard to imagine how the chin strap is going to work with it (the mask "straps" that come down the sides of the face to the nose are actually the tubes through which the air flows). Anyone had experience with this combination?
(BTW, I was suffering a lot from dry air - felt like my sinuses were being fried by it - the humidifier helped a lot with that. But my mouth does open occasionally, causing dry mouth.)