Keeps mask in place....on your face!
I bought this product because I was smothering in my mask and was tired of it constantly slipping up into my eyes.  Although this product does not seem to stay completely attached to the mask, it did help the mask stay in place better on my face and stay off my mouth.  I also liked that it made it easier to pull the mask down to take a drink and then replace it.
Rating: 5 stars