Embark on an exciting adventure with Marvel's Ant-Man in this wonderful storybook, 'Once Upon a Time... Grow Up, Ant-Man!'. This book uniquely combines the joy of reading with the journey of growing up, featuring an inspiring story about the beloved superhero. The big surprise is inside: a special height chart poster that allows children to track their own growth alongside their favorite hero. It's the perfect gift that encourages a love for reading and makes tracking growth a fun and exciting experience for young Marvel fans.