These are undersized and do not fit the mask pockets well

I add these to my favorite, most comfortable masks

But came nicely packaged and fits my homemade mask well

The filter does not fit in the cloth face mask very well.

They don't fill an average size mask very well

He looks forward to wearing this comfortable mask!

IT FIT INTO MASK PERFECT

but I didn’t like the mask so they have gone unused.

Worse than ineffective; if they are blocking air, they block the mask itself as the air has to go around the edges

They fit my mask well.

The mask is comfortable

It arrived on time and makes the mask feel more safe.

I find this mask more confining and warmer than the straight 3 ply cloth or the surgical mask options.

I bought these to make sure our masks are keeping us safe

This work great as an addition to protective masks

Might be good if your cheap masks ever come from China.

They are a little larger than I expected, but that is actually really good as the masks that I have are large and I felt that the smaller ones didn't cover the full area of nose and mouth

These are thick and fit well into my favorite mask's filter pocket

I like the mask that uses

Same filters as mask & fits perfect.