Better Protection: LEVENIS Ventilation Series KN95 Face Masks follow the GB2626-2019 respiratory protection standards and typically feature a filtration efficiency of over 95% | Skin-friendly: LEVENIS KN95 face masks features two layers of skin friendly non-woven fabric on the outer layer and two layers of high-quality melt blown filters on the inner layer. Allowing you to be protected without worrying about damaging your skin | Lightweight and Comfortable: These Face Masks are designed to be lightweight, making them comfortable and breathable to wear for extended periods | Perfect 3D Design: According to the human face, the 3D shape is designed with ergonomic to ensure the face mask can completely tights around face, mouth, nose and chin. You never need to worry about fogging your glasses and the Inserted nose clip falling off | Multiple Protection: Provides several times the protection of disposable masks, so you can rest assured whether you are at home, office, school, park, playground, shopping mall or other places | Disclaimer: This KN95 mask is NOT an N95 mask. For more information about KN95 masks please see the following before you purchase: amazon.com/AboutKN95s