I love the crayola washable markers. They work great for tracing quilting design lines that I need to follow, not talented enough to do it free hand. I used to print out the designs and pin them to the quilt top. It is so much easier to follow the lines I have traced and not have to pick out little pieces of paper from the stitches. I have used them many times and have had no problems even when they sit for a few days. I don't wash the quilts until I have completely finished them and the marks always washes out.