CleanAir 4-Ply Active Carbon Face Mask. Features: Made of 100% Non-woven Polypropylene (PP) which is soft, non-irritating, fluid repelling and free from fiberglass with the addition of a carbon layer which filters bad odors and organic vapors. 3D 4-layered medical isolation mask with a bacterial filtration efficiency 98% for use in hospital settings. Type IIR Face masks include a splash resistant layer to protect against blood and other bodily fluids. Type IIR face masks are tested in the direction of exhalation (inside to outside) and take into account the efficiency of bacterial filtration. Characteristics of Type IIR face masks: Pleat style with ear loops.