GREAT FOR ANY FABRIC - Trade in dusty tailors chalk or messy sewing chalk for these Heat Erasable Pens for fabric. Ideal for quilting supplies clearance, these fabric pens glide smoothly over any sewing fabric for clear, easy-to-see lines. 3000 FEET GUARANTEE - Each pen comes with 2 refills. They cover up to 3000ft in total, so ditch old sewing stuff for this sewing gadgets. They?re a must for sewing tools, quilting notions, and sewing machine accessories. IRON-AWAY CONVENIENCE - Simply apply heat from your iron, and the markings vanish in seconds. Perfect for busy sewists who want more time creating and less time scrubbing lines away. NO GHOST MARKS - These heat erasable pens for fabric disappear cleanly, leaving your sewing fabric pristine with zero residue. An ideal alternative to messy fabric chalk / fabric pencil or water soluble fabric marker. ESSENTIAL SEWING NOTIONS - Upgrade your sewing supplies and sewing accessories with this heat erasable pen set. Perfect for sewing patterns for beginners. Great as a embroidery pen or disappearing ink pen. Product description Will the ink marks completely disappear without leaving ?ghost? lines or coming back later? Yes, when you apply heat the special ink turns invisible and your marks vanish. In a few cases, users have noticed a faint ghost line on certain light fabrics after ironing, but this residue can be removed by simply hand-washing the fabric. How can I mark on dark fabrics effectively? For dark-colored materials, use the white ink pen included in the set. it?s specifically meant for dark fabrics. The white ink goes on with a short delay, so when you draw, the line will become visible after a few seconds as it dries. How do I replace the ink refill cartridges in the pens? To change a refill: Unscrew the metal tip at the front of the pen, pull out the used refill and remove the little plastic cap from the new refill before inserting it. Then simply insert the new refill into the pen and screw the tip back on securely.