I saw the frixion pens also. Are they the same thing? Awesome price if they are. I tested these Crayola markers on some white scrap fabric from my next quilt. I marked all colors, ironed twice, waited 24 hours to simulate how long it would take me to quilt it once I had it marked. It all came out in the washing machine. Not by running it under water at the sink (like the embroidery marker) I am thrilled! But I do think I'll test first.