2-Color Top Secret Invisible Ink Markers - 12 Pc.
Per Dozen #13647362
Write your invisible message with the white markers then reveal it with the blue or green marker. Perfect for kids crafts and games, these colorful markers can make learning even more fun. Great for daycares, schools, play supplies at home and more! Each package comes with a white marker and either a green or blue marker. There are 12 packages total. Plastic. 5 1/2"