Materials for fabric face masks
Elastic
You can use cord elastic or 1/8″ or 1/4″ flat elastic. Here are the most popular elastics people are using:
Cotton Fabric
A tightly woven cotton fabric is best, like broadcloth and cotton prints.
Flannel can be used for the lining or simply use two pieces of the main fabric.
You can also use a non-woven interfacing on the back of the cotton fabric as an extra layer of protection.
Thread
Don’t forget the all-purpose thread!
If you’re looking to make protective face shields, try a thick clear vinyl, like 30 gauge clear vinyl or 40 gauge clear vinyl.