All Revelle masks include an inner layer that is made from 100% Organic cotton, for maximum comfort on your skin.
This inner layer also serves as a filter pocket. It can be used to insert an additional filter for added protection.
This filter can be a folded paper towel, a paper napkin, a dried baby wipe, or even a disposable flat PPE face mask. Adding a filter provides a 4th layer of protection. Remember to always remove the filter before washing.