The fabric for this one was thin, but too fun not to use, so I lined it with a fusible interfacing. Full coverage of nose and mouth, great FUN fabrics.
These ARE LINED. They aren’t meant to filter minute airborne particles, nor is the bandana you could rig up as a mask as the CDC mentioned. Some fabrics are thicker than others, but they are what they are: They keep your fingers away from your nose and mouth, protecting you from what you might pick up, and others from what you might leave behind.