This is a good adult coloring book. The background is very repetitive, and at times a bit to black for my taste. Overall, it looks like fun and I cannot wait to finish coloring everything. It is a unique concept to put a Coloring Book on Kindle, and I was not sure how it would work out. However, the PDF download was easy. I like how you do not have to join the mailing list in addition to downloading the book. Although, I did anyway - so I can stay up to date on new releases.