As washable(till 50) and reusable mask, Use of Anti-bacterial and anti-virus Fabric. Manufactured with antibacterial and antivirus certified fabric containing nano-sized copper thread. Perfect block against bacteria and virus. 99.9% antibacterial effectiveness against pneumococcal and staphylococcus aurous (Certified by KATRI Test) Free from Human hazardous Substance. Free from formaldehyde, arylamine, nonylphenol, etc. (Certified by KATRI Test) UV Blocking. 99.9%. Sweat absorption and Fast drying function help comfortable breathing and wearing.