Not much wrong with the book itself, but it is far from my favorite (and also baby for now) for games of this style. While the material is quite nice and it makes music or talk when you press the buttons. But once the sound is muted, unlike others it does not make noise when handled or shaken, and for now that is what baby likes (3 months). Probably also the minimum age indicated (3 months) is it a bit limited, and it should be better to older children.