The only chalk that vanishes like a ghost when the quilter wants it to go. The makers of Miracle Chalk recommend the Quick Swipe (#104MC) by Miracle Chalk. Formulated for fabrics. LESS airborne chalk particles. No chalk bounce when sewing. Marks removed with the swipe of a steam iron. Mark a quilt BEFORE loading on long or short arm machine. Stays on the fabric until removed with steam iron for great visibility.