Loewenstein Medical JoyceOne Full Face - the one-size CPAP mask The JoyceOne mask by Loewenstein Medical is the world\'s first one-size full face mask. You no longer have to worry about whether you need a small, medium or large mask; instead the JoyceOne Full Face caters for all shapes and sizes thanks to its intelligently designed and adaptable cushion. The SilkTec coating on the silicone makes it one of the softest and smoothest cushions available, allowing it to adjust to your facial features and create a comfortable seal. The spring-loaded forehead support also needs no adjustment. It simply positions itself automatically. Combining this with the one size cushions means Loewenstein Medical have made the JoyceOne Full Face to be one of the easiest masks to fit. Near-silent operation The JoyceOne Full Face uses a radial exhalation value, which makes it near silent to use. Most CPAP Masks feature a serial of holes pointing in one direction, which can lead to whistling and other noise. The JoyceOne\'s exhaled air is dispersed in a number of directions, making it far quieter.