The fold-out concertina format is designed to be used while babies are lying on their fronts, encouraging them to strengthen their back, arm, and neck muscles. One side of the book has black-and-white high contrast artwork, which is carefully designed to be suitable for newborn babies. As babies get older, they will love look at the opposite side of the book which has bright hand-print artwork, appealing baby photographs, and even touch and feel textures!