Graham Medical Disposable Ear Loop Face Mask, 50 Count

Disposable Masks Offer Comfort & Breathability These face masks feature 3-ply non-woven material and an adjustable, full width nosepiece to ensure a proper fit. Outer facing materials offer a soft, fluid protection barrier, while the inner facing assures comfort and breathability. These masks are considered a non-medical grade (Level 1) disposable masks, which do not require certification. BFE > 98% ; PFE > 97%. Made in the USA. Bacterial Filtration Efficiency (BFE) measures the filtration efficiency of masks using live bacteria (viable particles) that vary in size from 1 to 5 microns.  Particle Filtration Efficiency (PFE) measures the filtration efficiency of a mask using non-living, or non-viable particles that are fixed in size from 0.1 micron to 1 micron.   Benefits  BFE > 98%; PFE > 97% 3-ply non-woven fabric Adjustable nosepiece Masks have a 2-year expiration date. Materials Aluminum 10% (Nose wire), Elastic fiber 13% (Ear loops), Non-woven Melt-blown fabric 32%, and Polypropylene 45%