Please note: We, by no means, are specialists in medical protective clothing. We do not make any claims on the efficacy of this face mask and these fabrics against spreading disease from an infected person nor protecting an individual from infection. Sew and use the Face Masks on your own risk. You should behave in the same way you do to protect yourself from other viruses (like Flu): regular and thorough hand washing, proper coughing and sneezing.Nonetheless, we have received a number of inquiries, including from medical practitioners, asking for our best opinion on fabric recommendations, and so we wish to offer our best advice. More Information...