Premium Quality Medical Grade - 3 Ply Protection - Mask CE, FDA Certified BFE 95% Class I mask Complete 3 layer filter protection. Outer Layer Water-proof non-woven fabric layer Filter large particles such as aerosols and droplets Middle Layer Melt-blown filter layer Filter tiny non-oil based particles in the air with (Bacterial Filtration Efficiency) BFE 95% Inner Layer Breathable non-woven fabric layer Highly absorbent and breathable suitable for sensitive skin 3 Ply Protection - Quality mask The middle layer is made of 99% top grade melt-blown non-woven fabric. Only with this layer acting as a filter, the virus will not penetrate. Do take note, the lower the melt-blown %, the lower the cost, the lower protection. You would not want to buy any low quality mask that defeats the purpose. Try our Quality CE, FDA Certified mask today!