KN95 masks are certified respiratory protective devices that filter out at least 95% of airborne particles, including dust, bacteria, and viruses. They offer similar performance standards to N95 masks but are regulated under China’s GB2626-2019 standard. These masks are widely used in healthcare settings, public spaces, and industrial environments where protection from airborne transmission is critical. Constructed from multiple layers of non-woven and melt-blown fabric, KN95 masks include an electrostatic filtration layer that traps microscopic particles without hindering breathability. They are designed to fit snugly against the face with a flexible nose bridge and ear loops or head straps that ensure a secure seal. KN95 masks are ideal for situations involving high exposure risk, such as working in crowded environments, during pandemics, or performing aerosol-generating medical procedures. Certified KN95 masks undergo rigorous testing to verify filtration efficiency, breathing resistance, and overall performance. Most models are foldable for easy storage and portable use. Some variants may also include inner soft lining for comfort and anti-fog nose strips for users wearing goggles or glasses. While intended for single use, extended wear or limited reuse may be allowed under controlled protocols, depending on environmental conditions and mask integrity. KN95 masks provide a higher level of protection than standard surgical masks and are a reliable choice for professionals and individuals seeking enhanced respiratory defense in clinical or public settings.