Filti and NXTnano are opening up their high-efficiency material technology to everyone. The goal is to provide our fellow Americans with the most efficient, effective, and affordable materials possible to construct their own masks. Nurses and doctors being forced to use masks made of shirts, which have very poor filtration properties, is putting the very people America is counting on to help get us through the COVID-19 crisis, at tremendous risk. To us, this is unacceptable.The material is constructed using our patent-pending Nanofiber technology and is highly-efficient on sub-micron particles. Made in the USA, in Tulsa Ok. Material is currently available in 21, 107, and 215 sq. ft. sheets.