; Great for marking patterns and lines.; No smudging or fading.; Red pen is great for redwork.
Heat will remove them again if this happens, however, if you will be traveling with the quilts to a cold climate or shipping them during cold weather, you may want to only use these pens for seam allowances or on the reverse side of the fabric. FriXion Ball Gel Pens-Heat Erasable 3/Pkg.3 pack includes red, blue and black pens. Carolyn Vagts, editor of Quilter's World magazine says, "These fabulous gel pens allow quilters to mark quilting patterns, applique placement and embroidery stitches using a patented gel that disappears when it is heated.