The series has a simple expression, which is very suitable for children aged 0-3 years. The bright colors and simple motifs stimulate the child's ability to recognize things from everyday life, and give parents the opportunity to talk to their children about everyday events. In selected titles, photos of babies have been included to enable the child to relate to the subject of the book.

All books in the series are illustrated with photographs, as research shows that these are most recognizable to young children.