A person draws something on a sheet of paper with a pen. When a white pen is then used to draw over it, the original color magically changes. The color shifts from that of the pen's casing to that of the pen's cap. With two-colored pens, this is a transformation. With single-colored pens, this is an erasure. You can also first draw something invisibly with the white pen and then make it visible again with a single or two-colored pen. Washable at 60 degrees. 12 two-colored pens - color transforming, 9 single-colored pens - color erasable, and 4 white magic pens.