The bag sets are 11 inch square gift sets for the very young, each containing 3 different format books, as well as a high-perceived value novelty item. The Hello Baby Bag Set contains a mirror cloth book, a mirror board book, a grip book, and a shaker teether, all in the Hello Baby brand. Hello Baby is a striking range of multi-format, high-contrast books for newborns. Research has shown that black and white are the easiest colors for babies to perceive, along with strong blue and red, and that clearly defined graphics improve their early recognition. With high-contrast colors and bold patterns, Hello Baby books are designed to give the most visually stimulating start in life to babies from birth to 6 months.