I've been using CPAP for over 20 years and this is the best mask setup I've found. 3 sizes are available and there's an easy sizing chart if needed. It's soft and comfortable, it doesn't slide around, and virtually no leakage or annoying air leakage sounds. I highly recommend the AirFit N30 or N30i, depending on what type of machine you have. I use it on my home machine and my travel machine!