The 3 layers of different fabric are specially for masks DIY. You can cut and sew with staples, hand stitch, sewing machine, to make a 3-layer mask.
Melt-blown cloth has good filterability and can be used with masks to extend the filter effectiveness of masks.
Non-woven fabric has the characteristics of waterproof and anti-fog, breathable and soft, etc
Outer non-woven fabric: Outer fabric has good waterproof effect and can effectively prevent large particles of dust. Impervious to water, non-irritating, odorless, breathable and soft to protect.The width of 3 layers is 17.5cm/6.89in(about), cut multiple lengths for optional sizes of masks,great for adult or kids’ use