Did you know that while you are sleeping, you probably move up to 50 times in a night?1 Although this is normal, movement can affect mask position and seal for those using positive airway pressure therapy. This constant change of position through the night, combined with changes in facial muscle tone, the tension in the headgear strap, and therapy pressure, all make sleep very "active." Imagine a mask that automatically adapts to your changing needs throughout the night. The Mirage Activa, with the exclusive ActiveCell™ Technology, does exactly this.