Face mask refills / filters.
 
Description
Matilda's Own Mask Refills - 100% Polyester
 
"Using the knowledge gained by making mask filters for the CSIRO in recent trials, we have created this highly efficient face mask filter. 100% Made in Australia from Hollow Conjugated Polyester for moisture absorption and extremely effective particle filtration."
 
Each pack contains 4 x A4 sheets, measuring 210mm x 297mm for use with your own cotton outer. We do also recommend a cotton lining as well. Current advice is 3 layers.
 
The packaging says it makes up to 24 refills. Refills are washable but they do recommend replacing them after each use.
 
The masks I am making are larger. I will get between 8 and 16 from my pack.