Kishigo Protective Face Mask ul)Miliken BioSmart 152104 . Protection from dust in construction, utility and industrial environments. Comfortable protection for nose and mouth. Fully washable. Bleach-activated fabric for added protection, safe to wash in Chlorine. Fabric & mask are USA made. Non-medical . One size fits most. Sold in packs of 12. 1 unit = 12 masks. Care: Daily washing recommended, to active BioSmart wash mask in EPA registered chlorine bleach. Do not use color safe bleach. Maintains effectiveness through 75 washes.