Big Book of Geometric Designs and Illusions

Over 100 ingeniously constructed designs form dazzling optical illusions and geometric shapes, offering ample opportunities for imaginative and inventive coloring. This compilation consists of 4 volumes that are popular with colorists of all ages: Geometrical Design Coloring Book, Visual Illusions Coloring Book, Optical Illusions Coloring Book, and Dazzling Designs Coloring Book.