Port Authority Mask Kit. Anyone handy with a sewing machine can use this kit to make masks that act as additional face protection when FDA-cleared masks are unavailable. Each kit includes materials to assemble 50 two-ply pleated masks with elastic head straps. 4-ounce, 100% cotton jersey Machine wash warm up to 15 times before discarding. Tumble dry high. Do not use bleach, chemicals or disinfectant to wash this product. Not recommended for use in a surgical setting or where significant exposure to liquid bodily or other hazardous fluids may be expected May be used when FDA-cleared masks are unavailable Fabric contains silver and copper Non-returnable