Their process involves elastic straps, ironing, and some light sewing to make a comfortable face covering.
If you have a sewing machine, plenty of materials (including some wire), and lots of time, this will probably give you the most comfortable face mask possible from home.
By making a mask at home instead of buying a medical mask, you'll free up those more effective masks for medical professionals who are putting their own health at risk to help people who are most affected by the coronavirus
For everyone's safety, stay home whenever possible and make sure you maintain a six-foot distance from people you see out in the world