Washable Diffuser: The new style air diffuser - reduced noise and air draft - is washable and durable. VisiBlue: Blue highlights incorporated into the mask to help patients identify mask parts A nasal pillows mask designed for confidence and built for comfort. Gaining patient confidence is key to successful CPAP therapy and patient confidence begins with a mask that fits and is comfortable. The soft AirPillow seal inflates to form a Stabilizing side support to seal in and around the nose.