*Nose Clip:Aluminum for Easy Adjusted to Fit Closely
*Composition:Four-Layer Nonwovens,Polyester (Outer) + Active Carbon + Polypropylene Melt-Blown (Middle) + Polyester (Inner)
*Valve:Exhalation
*Certification:CE EN149 (FFP1,FFP2)
*Filter Efficiency Level:Against Particulate and Aerosols
FFP1-80%
FFP2-94%
Active Carbon Cloth Absorbs Nuisance Organic Acid Vapors