The 5x REIS KN95 Protective 5 Layer Face Mask is a pack of five disposable ear loop KN-95 respirator masks designed for adult unisex use. With a Bacterial Filtration Efficiency (BFE) and Particle Filtration Efficiency (PFE) of over 95%, these masks provide high levels of protection. They are intended for various disciplines such as emergency medicine, cosmetology, dental laboratory work, dentistry, medical laboratory settings, orthodontics, and biological laboratory use. The masks are made by REIS and ship from CT, USA with a handling time of 1 business day.