Reusable waterproof/water-resistant fabric face mask with elastic over-the-ear loops designed to help protect wearers from respiratory droplets. One size fits most.
We had some extra waterproof fabric around, so we made these. If you work in the rain sometimes, this can be very handy. Plus, it may help to extend the use of an N95 mask, especially in "splashy" situations, if you wear it over the N95. It's very breathable, while able to repel water easily, even after multiple cycles through the washer and dryer.
As noted above, it will not filter out the coronavirus and prevent you from catching COVID-19. The fabric weave is not fine enough to remove aerosol virions, but it does help to dramatically reduce the droplets that your cough, sneeze, or laugh expels. This qualifies as a CDC-recommended face covering for the general public in low-risk situations, such as going to the grocery store or most types of work.