4 Pack Busy Book, Learning Activities Book, Quiet Sticker Book PORTABILITY: This set of 4 busy books are "Elementary Cognition", "Look! Alphabet", "Yeah! Leaning Maths" and "Look! Animal". The size is 21x14 cm, which is easy to carry. It is very suitable for travel and can be used in airplanes, cars and restaurants. It is very suitable for preschoolers, home learning, kindergartens and special education. It is also a perfect gift or party toy. CONTENT DESIGN: It has various learning themes like recognition, reading, writing, animal life cycle, and puzzle matching. This promotes cognitive development. The fun forest scenes spark kids' interest, enabling them to learn while playing. PRODUCT QUALITY: With thickening treatment, rounded corners, 2 flexible buckles, and waterproof design. Made of safe materials and CPC - certified. It's durable with waterproof pages and cover. Printed with safe ink and smooth edges, suitable for little hands. FUNCTIONAL USES: This busy book is excellent for developing toddlers' hand - eye coordination, color perception, memory, basic cognitive, logical thinking, and concentration skills. It offers valuable learning during playtime. ECO - FRIENDLY CARD DESIGN: The product set includes Velcro accessories and requires self - assembly.For resource - saving, some page themes use Shareable Cards. Some cards have two numbers for use on two pages. It's eco - friendly without sacrificing functionality. Ideal for autism learning materials and as a busy book for toddlers.