I love this mask overall. It's a bit tricky at first getting used to the way you have to put it on, though. In my case, I always feel like my nose has gone through the hole, and each night (aka the textbook definition of insanity), I keep repeatedly checking and trying to adjust it. I can sense if it is on "wrong," since the silicone will block my nostrils. But suffice it to say, it's tricky. But I love love love no more air leaks that feel like a fan was blowing on my face from traditional FFMs and that I don't have that cross-eyed feeling with the piece between my eyes anymore. That alone gives it a 5-star rating in my eyes (no pun intended!)