Mask Filter Inserts - Matilda's Own
Matilda's Own Mask Filter Refills - 100% Polyester
The pack contains 4 x A4 sheets measuring 210mm x 297mm for use with your own cotton outer. Cut to size required.
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.
Refills are washable but it is recommended to replace them after each use.