DRITZ: Mark-B-Gone Combo Pack. Use these marking pens to transfer pattern markings for needlecrafts and quilting designs. For best results use on washable fabrics, not recommended for dry clean only fabrics. Pens are made of water soluble inks and the ink can be removed from fabric with a damp cloth. This package contains two pens. The blue pen is for marking light fabrics and white for marking dark fabrics. Imported.