The Mirage Activa^TM nasal mask uses ActiveCell^TM Technology to automatically adapt to the changing positions of active sleepers. Because the average person moves roughly six times per hour and fifty times per night when sleeping, ResMed developed ActiveCell^TM Technology.¹ ActiveCell Technology allows the mask frame to move independently of the cushion, which helps the cushion stay in place and maintain a seal during active sleep. The mask cushion's ability to automatically stabilize reduces fitting time and patient management costs and improves comfort and compliance.