Perfect for Independence Day or any day, this special edition mask sports an American flag label and is made in the USA of US materials. Three-ply 100% cotton jersey 500 units per case (100 inner poly bags with 5 units each = 500) May be used when FDA-cleared masks are unavailable 5 masks per pack Not recommended for use in a surgical setting or where significant exposure to liquid bodily or other hazardous fluids may be expected Machine washable Non-returnable