Our mask already has a good standard due to the tightly woven, two-layer fabric.
For even better protection of your fellow human beings, you can also insert a filter into your mask.
To do this, simply take a kitchen towel, handkerchief or paper towel, cut it to size and place it (single or multi-layer) in the opening on the inside of your swapface mask.
We recommend washing the mask daily and replacing the filter regularly, but no later than when it is first moistened.
You can find more information about the protection of our masks here.