Miracle chalk in the form of a crayon. Hand friendly. Marks disappear with a swipe of a steam iron. Great for free hand drawing of quilting lines. At last! A product that will mark your quilting lines on dark fabrics, stay on while you quilt and then with a swipe of a steam iron the chalk line disappears! Use either the crayon or markers or if you have stencils then a quick swipe will put the chalk on your fabric through the stencil and it stays until you swipe it with a steam iron.