South Korea's anti-epidemic plant has launched a mineral infused fabric mask recently! It combined mineral materials that are harmless to humans. Also, the materials can absorb and kill 99.9% of bacterial viruses, including a variety of common viruses such as Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, H5N1 and influenza B, etc. Its’ efficacy is tested and certified by Korea KOTITI, and also can anti - bad breath so user can be equipped with a mask for a long time. Double-layer fabric design with double protection! Three years standby period in unopened. Mask can be washed up to 50 times. Environmental protection and convenience.