3 layers: outer layers are 100% organic cotton knit fabric and the filter layer is 100% cotton woven fabric.
Filter layer was shown to be 83% effective on filtering 1-micron particles and 72% on 0.02microns particles based on a Cambridge University Study.
Nose-wire and optimized fit for a good seal on the face and best filtration.
over the ear loops for comfort
washable and reusable
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