The Airpillow system inflates to form a gentle pillow of air and seals in and around the nose. The extra soft pillows have a sealing region made of extra-thin (0.25mm) soft silicone which provides a gentle seal. The versatile pillow geometry allows this mask to fit a wide range of nostril sizes. The stabilising side supports on the pillow are designed to reduce the likelihood of the seal dislodging during sleep. The mask also has 2 different sizes which allows for personal adjustment when needed.