The book I ordered for my son 4 months old, because he starts to reach for things and currently he loves things that noises give (rustle, squeak, ...) So I decided for this book by Lamaze, as I have already other products of the brand. What can I say, my son loves the book! We are therefore always present, whether in the car or in the playpen. It's great processed, has bright colors, different materials for the sense of touch and the most important thing: it rustles and squeaks :-) For the money I would really recommend it!