KOCO Antimicrobial Fabric Face Masks is non-medical, reusable, multi-ply cotton face mask that filters out dust, pollen, germs, and bacteria. KOCO Masks are no typical mask as they have been antimicrobial treated as a further defense in not only bacteria, but in providing long-term control of any microbial growth that might otherwise occur on the fabric's surface. Antimicrobial treated fabric is very breathable and comfortable on the skin. It is washable and can be washed up to 20 times while still being antimicrobial.