Subject: ResMed Quattro Air CPAP Full Face Mask Frame
This ResMed Quattro Air CPAP Full Face Mask Frame, and its accompanying cushion, are super light-weight and extremely comfortable. There are only 4 pieces in the entire headset, with headstrap, mask frame, cushion, and adapter. Yet, the mask is highly adjustable and flexible. I'm a challenge, for certain, and have tried many. But this is definitely a winner, and I can see why it's ResMed's most popular full face mask.