Some masks I have. Size S/M10" across x 6" Down. Large 11" across 6.5" down. These masks is NOT rated for disease control. The CDC has provided the following information regarding homemade face masks: The role of of face masks is for patient coughs or sneezes. Patients with confirmed or suspected COVID-19 should wear a face mask until they are isolated in a hospital or at home. Most face masks do not effectively filter small particles from the air and do not prevent leakage around the edge of the mask when the user inhales.* when professional facemasks are not avaliable, healthcare personnel might use homemade masks for care of patients with COVID-19 as a last resort. However , caution should be exercised when considering this option since their capability to protect healthcare personnel is unknown.So with that being said I made mine with all cotton material, with ties, they are breathable and comfortable.