several of you have mentioned nose pillows and i don't know what that is. mine is a full face mask (that's what my dr. calls it). it covers my nose up to the bridge and my mouth down to under the bottom lip. the machine has a humidifier and a heater that allows me to adjust the temperature of the air. it has a filter that gets changed and i only use distilled water. mine leaves red creases in my face running where laugh lines would be. i've never tried the mouth ones that make you look like a hammerhead shark.
so, what is a nose pillow?