KN95 facemasks are an excellent alternative to N95 facemasks as they conform to a similar standard. This is a high quality FFP2 self-priming filter type particle respirator and Plow (Huizhou Huadi Industrial Co.) is a trusted manufacturer. They are a cool looking Blue color and come sealed as 5 packs. Certified to standard: EN149:2001+A1:2009. Manufacture date: 4/2020. While these masks are designed to be used once and then discarded, they have a ‘life’ of about 9 hours, so with proper care you can extend for multiple uses. We recommend storing them in a paper bag when not in use.