Marvel Invisible Ink & Stick Puzzles, Ultimate Spiderman, Spider Sense

Age 3+. The special pen does it all! 2 in 1 activities. The special pen reveals the invisibly printed pictures and answers! Unscramble the stickers to create a surprise picture! Facebook: Conforms to ASTM D4236 - Non-toxic. From the makers of Yes & Know Game Books (Trademark of Stry-Lenkoff Co.). Printed in USA.