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 boundOne-sided pictures40 black and white illustrations 8.5 inches by 11.0 inchesFree PDF included (see inside of book for details)200gms coverPaper suitable for pencils, pens, felt tips pens, and acrylic pensMakes an excellent gift for a loved one struggling with stress or anxietyAn excellent way to relax and unwind.