Use to transfer pattern markings needlecraft & quilting designs. Air eraseable pen on one end & water erasable on the other. For best results use on washable fabric. Not recommended for dry clean only fabrics. NOTE Do not iron over marks or launder before completely removing with plain water. Some laundry products containing sodium hydroxide or sodium carbonate may set marks if they are not completey removed before laundering. 6 per box. Purchase by the box.