This is the best full face mask I have ever used. I have been using an F20 AirTouch for years that was causing irritation on the bridge of my nose. With the F40 there is no contact with the nose bridge. F40 is lighter, more adjustable and more comfortable.
I have one caveat: The Large Head Gear is almost too large for me at 6 feet 200 pounds. I reordered a Standard Head Gear.
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