Each of our cloth masks includes Synergex One filtration. Proper filtration is measured using BFE (Bacterial Filtration Efficiency) and PFE (Particle Filtration Efficiency).

Synergex One is made from a non-woven polypropylene composite, made with unique melt-blown technology. It has a BFE of >85% and a PFE of >90% at 3 microns. It's undergoing continuous testing to be rated at >95% BFE. Synergex One filtration was designed in North America and is splash resistant.