People who love to color will be captivated by this hypnotic array of circle and line designs. More than 30 original patterns offer a tremendous variety of intriguing coloring possibilities, including plenty of eye-catching optical illusions. Pages are perforated and printed on one side only for easy removal and display. Specially designed for experienced colorists, Playful Patterns and other Creative Haven(R) adult coloring books offer an escape to a world of inspiration and artistic fulfillment. Each title is also an effective and fun-filled way to relax and reduce stress.