What material is used to make the reusable mask?

Our Australian Made Filtering Face Masks consists of 3 layers. Each layer meets the W.H.O. recommendations:

1. Outer Layer: 100% Polyester (hydrophobic fabric which repels moisture).
2. Middle Filter Layer: 100% Polypropylene, spun bonded and 50gsm.
3. Inner Layer: 100% Soft Cotton (hydrophilic which absorbs moisture).

With a secure single strap elastic: 100% Polyester

Our mask is subject to normal wear and tear and will last for 100 plus washes.