This book has 40 beautiful black and white illustrated pages. This book comes with a free PDF version. Details explaining how this book can be downloaded in a PDF format are contained inside this book. Adult Coloring Book - Mysterious Mechanical Creatures Book Features Soft bound One-sided pictures 40 black and white illustrations 8.5 inches by 11.0 inches Free PDF included (see inside of book for details) 200gms cover Paper suitable for pencils, pens, felt tips pens, and acrylic pens Makes an excellent gift for a loved one struggling with stress or anxiety An excellent way to relax and unwind.