5 Layer Filtration using layers of a non-stick electrostatic spun cotton outer layer, with micro-filtration inner layers and an activated charcoal core. Perfect for protection against dust, bacteria, pollen, allergies, smoke, pollution, and ash.
These are not washable filters and are suggested to be replaced every 80 hours give or take based on the strenuousness of use. Always replace at any sign of soiling.
Filters measure approx. 4.9" x 3.14"
Listing is 10 inserts only, not an actual face mask. These are perfect for use in homemade masks as well as in store-bought masks for added protection.