Hello Night, Hello DayThis new high contrast book in TummyTime format introduces babies to simple black and white patterns and illustrations The bestselling high contrast books for babies! Make the best of tummy time with your baby with this book full of simple high contrast black and white images. Your baby will fall in love with the beautiful "daytime" and "nighttime" illustrations in this small and sturdy accordion book that opens to stand up in a crib, on the carpet,