Bosal Polypropylene for Mask Filters (20" x 5yds) SIOC Built-in measuring decal

Built-in measuring decal

or follow the printed markings to cut solid hexagons in 2in

narrow cut that is perfect for layering

No more confusion or frustration—just clear

super stretch

Bosal Polypropylene for Mask Filters (20" x 5yds) SIOC Built-in measuring decalAdd an extra layer of protection in your face mask with Bosal's Polypropylene Mask Filter Material. This breathable, nonwoven material is now a recommended material for homemade cloth face masks. Bosal's Polypropylene is machine washable, but it should not be tumble dried or ironed as it may melt. Polypropylene is a type of plastic that feels and cuts like fabric and won't fray. Bosal's Polypropylene Mask Filter material comes on a bolt and measures