I see in an add that there is an option of 1 or 3 liter bag. I was not offered this option when I ordered. Has it been changed to include both or just one? Anyone know?

I can't wait for it. I've torn up so many disposables that I've lost count. Really wanna try that mouthpiece.

Never mind those questions about the bag size. I see now under product description that is the 3 liter bag. Sweet! I can now take a full breath while oxygenoficationizing. hehe new word of the day.

I own three of them (home, office, car). Nothing like them. I, too, was not given an option as to the size of the bag. All three of mine have the 3-liter capacity.

Wise purchase.

just got it. OMG it is the best thing since the distortion pedal. The mask seals so well, but I opted for the mouthpiece to start out with. I'll go a week with each to make my decision.

Dear oxygen mask maker,
I would like to pucker up and give you a big ol' kiss. This vacuum formed piece of plastic is definitely of holy design. It is the perfect compliment to my shiny silver and green cylinder of delight. I think you and Apria ought to marry and have children. They would be of the finest ilk, and most definitely would rule the world.
Sincerely,
#1 fan