Works, but not comfortable [SEP] These definitely keep the mask from touching my nose or mouth, but they're not very soft, so they don't form fit to your face either. Therefore they can be a little uncomfortable if you have to wear them for a long period of time. I don't have the need to wear a mask often (I'm at home most of the day) and will still use them when I wear a mask, but they are not as good as I was hoping.