The Mirage Activa LT Nasal Mask is the first in ResMed’s ConvertAble™ Series—offering a choice of two high performance cushions (Mirage Activa LT and Mirage SoftGel) on the one durable frame.The ResMed Mirage Activa LT CPAP mask and headgear is designed to accommodate every CPAP or BiPAP user and ensure a comfortable, hassle-free night. The ResMed Mirage Activa LT is an updated version of the extremely popular ResMed Mirage Activa Nasal mask. The Mirage Activa LT uses the proven ResMed ActiveCell technology and bellows-style nasal cushion to ensure minimal leaks and minimal facial pressure, even at high settings. Drawing from the popular features of the original Activa, the Mirage Activa LT continues with a proven design that is now much smaller, 49% quieter, and easier to wear. With a slimmer profile and improved exhalation diffusing system, the ResMed Mirage Activa LT CPAP mask and headgear is one of our most popular nasal CPAP masks.