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® 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.