Coloring Books for Adults: Variety of Mixed Garden and Flower Mandala Patterns for Relaxation Stress Relieving 50 unique mandalas pattern designs to color. You can use markers, colored pencils, gel pens, or pens for coloring. Each coloring page is on a separate sheet. This book is great for both adult and children. Coloring books are not just for the kids anymore. In fact, adult coloring books are all the rage...