1.The 3-ply construction with soft, fluid-resistant, non-woven outer layers and highly absorbent inner layers effectively protect against pollen, dust, bacteria, and germs. Very low resistance to breathing due to pleats and non-woven fabric. Hypoallergenic, latex and fiberglass-free. 2. COMFORTABLE & BREATHABLE: High-elastic ear loops and adjustable nose clip to ensure a comfortable fit and add no strains to the ears. Easy to use, cover mouth, nose and chin. Helping to Create a Tight Seal & Stop Glasses from Fogging. 3. Filter: Melt-Blown filter, BFE 99% 4. Origin: South Korea 5. Certificate: FDA, CE