Code 93170: Suitable for Anti-pollen and air pollution. Features Medical level for general use. Non-woven material 99% BFE at 3 micron. Type: Flat shape, 3-ply, non-sterile, earloop Color: Black Nose band: PE iron wire Outer Layer: Water-repellent non-woven Middle Layer: High level static filtration non-woven Inner Layer: Microfilter thermal-bond non-woven