The Centers for Disease Control and Prevention (CDC) define cloth face coverings as fabric coverings including cloth face masks, scarves and bandana coverings, or any homemade face covering made of cotton fabric.
The CDC also makes clear that cloth face coverings should:
- Fit snugly but comfortably against the side of the face
- Be secured with ties or ear loops
- Include multiple layers of fabric
- Allow for breathing without restriction
- Be able to be laundered and machine dried without damage or change to shape
You can find more information on the CDC’s website.