Design link (with video): https://www.facebook.com/watch/?v=2504854873098703
Notes and Recommended Modifications: Please use our filtering resources/documentation. Without the filter, this design is good for use over existing PPE – ties are preferred over loops. For the filter, consider non-woven polypropylene (see HelpfulEngineering Cloth mask above).
Download from GetUsPPE.org : https://getusppe.org/how-to-make-a-face-mask/