This has been the best way to waste endless hours of my time while recuperating from a broken ankle that required surgery. I'm 2 months into a 3 month period of being entirely non weight bearing, most of which I’ve had to elevate my leg 23 hours a day to minimize edema. I purchased the Sargent Art brand colored pencils, 50 count box to use with this, & the two work really well together. I like how detailed the pages are. Some of the pages are so detailed that I don't think I can sharpen a pencil small enough to color them. They may require a set of fine tipped felt tip pens or the like. The coloring pictures are one per page, so there's no worry of bleeding through. The smallest, least detailed page took me about 5 hours to complete. Most of the others took 6+ hours to complete. The designs are similar, but not too much alike. I liked that there were some British slangs in there, as well as some old school words, one of which I had to look up on Urban Dictionary, because I didn't know what it meant, but was amused to learn it’s meaning. This book can obviously be offensive to some, but I have a vast sense of humor & a sailor mouth, so I found it to be wildly entertaining. I’ve thought about ordering other books in this series, as well as other brands, but I don’t see myself finishing this book in the time that I’m recuperating, because the pages really do take a long time to complete. I also don’t see myself taking the time to color at all once I’m healed, because I’ll be ready to return to my active lifestyle. I’ve also attached some photos of a few of the pages I’ve completed. If you found this review helpful, please vote helpful. Any questions will be answered to the best of my ability.