67 % Non Woven Polypropylene, 33% Meltblown | | Imported | | 50 Pcs Latex Free Disposable Premium Quality Astm Level 3 Tested Face Masks | | Protects Nose And Mouth Against Fluids, Fluid-Resistant At A Pressure Of 160 Mmhg. | | Premium Filter Protects Against 99% Of Particles Larger Then 0.1 ?m, Filter Efficiency = Pfe99%. | | These Masks Are Manufactured In A Class 100,000 Cleanroom, Masks Should Be Disposed Of After Each Use. Shelf Live 2 Years | | Testing Conducted By A Us Lab. Reports Visible In The Image; Full Reports Available Upon Request. Produced In China By A Dutch Brand And Manufacturing Facility. | |