Marine Mom I Raised My Hero Flat Fabric Face Bandanahis face mask covering is Not Medical Grade. Mask is Washable with soap and water and air dry. I firmly believe to always use the finest quality materials available. We use 8 oz polyester material, the same material we use for our leggings Details: We offer 4 sizes with pre cut ear holes and a one size fits most with slits rather than holes Include the tip of your nose in the measurement No uncomfortable elastic to rub or ties to come un done