This book is a ton of fun!  Fun to see the color-by-number drawing and fun to see what your own color-choice drawing looks next to the color-by-number picture.  Even kids five and up would be able to color this book if they are the patient, studious type of kid.  Bouncing-off-the-wall kids probably would not be able to sit still long enough to enjoy their progress.  I don't worry about quickly finishing a drawing, I just like the "ozone" time I get coloring at my own pace.  Great for winding down and chilling out!