Don't let my rating scare you away from trying this. This is the fifth CPAP I've tried and had to tape my mouth shut to use it. It is the least uncomfortable with the straps than any of the other that caused TMJ but my sinuses did terrible with the air pressure delivered in this way. I also got my lowest score for adjusting the mask and for leaking (which I must have done in my sleep). It seemed to leak least than any of the other masks but with moving around, I must have had to adjust the nose piece. I wish it would have worked because it is very lightweight and doesn't leave lines on my face like all the other masks or make my face look all puffy for half of the day after waking. Since I am very sensitive, the nose piece couldn't be adjusted any tighter without discomfort and the tape was starting to cause skin problems. Tighening probably would have solved the leaking problem. It is a great product but just not for me.