Dual-Wall ActiveCell Nasal Cushion: The Mirage Activa LT's unique Dual-Wall Cushion features an ‘active cell’ that expands and contracts, adapting to movement and therapy pressure changes through the night. The dynamic cushion design is secure enough to give you an effective seal, yet gentle enough to move when you do.

Breath-O-Prene Headgear: Because the nasal cushion's active cell does all the work, Activa LT is less dependent on headgear tension to achieve and maintain an effective seal. In fact, Mirage Activa LT works best with some slack in the headgear -- no more overtightening straps! That means easier fitting, improved comfort and fewer strap marks!

Lightweight Frame with MicroFit Forehead Dial: The lightweight, durable mask frame offers a streamlined forehead support for a clear field of vision; and MicroFit dial providing 24 positions of comfort at your fingertips. Easily adjustable with just one hand (even while lying down), the dial fine-tunes the mask fit when you need it most.

Quiet Diffuser System & 360° Elbow: The Mirage Activa LT features an innovative vent design that reduces noise by approximately 49% over the original Mirage Activa. Located on the elbow for easy cleaning and disassembly, the diffuse vents are designed to disperse air quietly and softly, at a short distance, away from the bed partner. The Activa LT's 360° swivel elbow allows you to position the tubing wherever you want for maximum comfort.

SoftGel & Activa LT Convertable Comfort: Because the Mirage SoftGel and the Mirage Activa LT share the same mask frames you can use both Activa LT ActiveCell and SoftGel DoubleGel cushions with your mask.