These precut and ready-to-sew face mask kits come with everything you need to create a 3-layer protective face mask. Each kit contains precut fabric made from 100% cotton for the outer and lining fabric as well as one of two different levels of filter media. One mask features a replaceable NanoWeb® FM filter from H&V which provides 10 times the level of protection of 2 layers of cotton. The other mask includes a traditional non-woven filter media. The pattern/instructions offer directions for two styles of elastic ear loops, as well as alternate instructions for using a single strand tie. Each package includes the materials to sew 4 one-size-fits-most masks.