I received my product and have reached out to the company twice. I have NO IDEA how this works. In the instructions it looks like you place the breathing valve into the tube but the stems of the breathing tube do not fit into the tube they are to big so it simply falls off. No one has got back to me to either say this is defective and they will send one that isn’t or explained any other way that this could be used. Which I could not see and is not shown in instructions.
Have not had to use yet, but looks like it would be effective!
I bought these for everyone in family but haven’t needed to use them. Thank goodness.
We are in te medical field and found a sense of security knowing we had a tool to use at home for an emergency. Having a new grandchild was the impetus for us, even with medical training.