The AirFit F20 is a culmination of ResMed’s feedback from their previous mask generations; keep what works and improve what doesn’t. Gone is the entirely frosted cushion surface, replaced with a large smooth surface seen in the Quattro, using only the frosting on the problematic nasal bridge with new supports to aid the seal in this area. Gone are the rubber quick-release tabs for the elbow, with a more durable and easier-to-use plastic design incorporated. The new inflatable seal and magnetic clips are new technologies that should provide a step forward from previous entries. Overall, these should combine to make the AirFit F20 ResMed’s best full-face mask yet, and their internal studies (detailed below) and early reviews suggest that they do. If you are considering changing to a different full-face Mask, then the AirFit F20 should be on your shortlist. The item for sale is not in original box but is new.