N95 Mask Five layered PPE designed to achieve a very close facial fit and very efficient filtration of airborne particles. The Layers usually are Spunbond, Hot Air Cotton, Two Layers of Melt Blown and Inner Layer of Soft Spunbond. N95 respirators remove at least 95% of airborne particles with a size of 300nm (0.3 micronN99 respirators remove at least 99% of airborne particles N100 respirators remove at least 99.97% of airborne particle