2 Pack Adult Non-rebreathing Oxygen Mask

The bag collects the output of the oxygen machine when user is exhaling. Bag contents are used during the user inhalation. This provides more efficient use of the oxygen machine. Of course the cannula allows more freedom than a mask but less efficiency.

Bag makes bottles last longer .All this smoke from fires it is a blessing , keeps particulate matter out of tour lungs .

They didn't fit onto my 3 footer very good. (

I am on total 24/7 oxygen, and a non-breather mask is a necessity for me. This 2 pack was supposed to be a backup for me. What a joke. The air reservoir is so thin and small, that I don't anticipate it lasting for long, if it doesn't pop immediately. Extremely disappointed. Don't know what I will do to find what I need now. I'll be ER bound without it

Very nice item works great money very well spent i give it a big A+

Does what its supose to do. Im 68 years old slendar male 150lbs and fits great.

Not the great, leaky

Fairly strong plastic/chemical odor. Is it hazardous? Persists through multiple uses. Fits well.