A new study has added to the mounting evidence that your mask isn’t fully protecting you if it doesn’t have at least three layers of fabric.
Source: Your Mask Needs These Three Layers to Fully Protect You, Study Says
A new study has added to the mounting evidence that your mask isn’t fully protecting you if it doesn’t have at least three layers of fabric.
Source: Your Mask Needs These Three Layers to Fully Protect You, Study Says