Powerful 6-layer insulation system. Maximized protection for yourself and others. Easily breathable, activated carbon valve. New PP non-woven fabric, provides at least 95% filtration efficiency against aerosols and particles. This product is approved per FDA's EUA (Emergency Usage Authorization) whitelist. CE and GB 2626 lab results available upon request. Manufactured in dust-free workshops adhering to ISO 14644-II standards. Each respirator is individually sealed and packaged. Skin-friendly fabric, unique nose bridge design for better wearing experience. This respirator offers comfy elastic mask straps that suit different kinds of faces. The inner lining of the respirator is produced with low allergy material. Lightweight advanced coating guarantees longer weartime than traditional KN95 respirators.