For great visibility, Miracle Chalk is the only chalk that stays in place, but vanishes like a ghost when steam ironed.
Specifically formulated for fabrics. Less airborne chalk particles. Mark a quilt BEFORE loading on long or short arm machine. No chalk "bounce" when sewing.
Chalk marks are removed with a steam iron and sharpens with a knife or sandpaper.
3 markers per package
NOTE: Test before using. Contains: Zinc Stearate