High Quality 100% Cotton Fabric used to make face mask. Mask are reusable. All mask are made with an opening/pocket to insert filter for proper protection. One filter (at no cost) included per mask with each order. Additional filters are available here for purchase. Masks are recommended by the CDC in reducing spread of Coronavirus (COVID19). IMPORTANT: A cloth mask is never a substitute for a surgical or N95 mask. THESE ARE NON-CLINICAL MASKS and NO MEDICAL OR EFFICACY CLAIMS ARE BEING MADE ABOUT THEM. We encourage you to always continue practicing social distancing and hand washing for 20 seconds tops.