These face mask filter inserts feature 5 layers of protection with a carbon activated inner layer sandwiched between 2 layers of cotton fabric and a melt blown layer to block most particulates larger than 2.5 microns. Filter inserts are intended to be used for up to 48-72 hours (depending on the level of pollution) before changing out.
Each pack includes 2 filters. Fits perfectly in the Alpha Camo Face Masks.
Stay safe. Stay caffeinated. Rep Alpha.