High Quality Disposable Mouth M?sks, can be Used in pet Shops and Any Other Environment 3-PLY MASK - the masks are three-ply (three layers). This three-ply material is made up from a melt-blown material placed between non-woven fabric. The melt-blown material acts as the filter that well stops Virals from entering or exiting the masks. Daily Protective- Mask filter can prevent airborne particles, dust, seasonal allergies, smog, pollution, ash, garden pollen, etc., most suitable for most occasions.