Oxygen4Energy - Portable Oxygen Bar in a Can

This works fine, but purchased for my Dad. He isn't ready for oxygen all the time yet, but once in a while needs to catch his breath when out in the heat or walking very far. He prefers the type with a little face mask attached, even though that kind is bigger and less easy to carry. This one seems foreign to him to squirt it directly into his mouth (even though he does use an inhaler on occasion) I think for a person who wanted something small and wasn't averse to squirting it in like a breath spray, it would be great.

I purchased this in a 6 pack - when I got them it took awhile to get to all 6 and the last 2 were totally Dead Empty! Came back on-line to leave review and the 6 pack offer was no longer here but same product!So... I have read re other products of same problem... Now I have learned to test all bottles immediately and that still does not mean they will last until you are ready to use them! BAD