This double pack includes Diabolically Detailed Coloring Book Volume 3 and Diabolically Detailed Coloring Book Volume 4. So, that means that you get all of the diabolical designs from each of those volumes all in one coloring book. Are you ready to earn your black belt in the decorative arts? Do you think that you've got what it takes to tackle this art-filled coloring challenge? If so, then you better come armed with the right equipment, like some fine tip markers or some seriously sharpened colored pencils, because these 60 incredibly detailed designs will put your coloring skills to the test. The back of each coloring page has been left blank. That makes these illustrations perfect for displaying after you've finished coloring them in.