Running Pen is a mixed-color crayon top that can be combined with half-sided crayon in different colors. It allows children to observe the mixing changes of crayon colors through the convex lens on the top of the body when twisting the top, and then further recognize colors, stimulate visual perception development, improve concentration, and help develop children's hand muscles and hand-eye coordination.
Running Pen is equipped with different game drawings guide, giving full play to changeable gameplay and educational implications.