Your baby will love our Duo Duo Sensory Book. This soft and colorful busy book for babies includes 4 pages of rhyming text to introduce our character Duo Duo. This book also includes a variety of sensory sounds and textures, such as crinkle paper to introduce your child to new sounds and experiences. This pocket sized soft book is perfect for carrying around and travelling, let your baby engage in a fun sensory anytime, anywhere with our Duo Duo sensory book.