I have been making masks for friends and local essential workers.  Proceeds from these sales will go toward  materials to make more masks  - for sale & donation to local essential workers and small businesses.  I use cotton fabric, with a soft fabric on the inside and lined with non-woven lining.  There is a dart, under the chin and a wire at the nose, for a good fit.  I use elastic for wrapping around one's ears.  I consider this a sliding-scale priced item... everyone should be safe.  They have been very popular - I've shipped to AZ, NY, WA, MN, TX, NC and counting....