The SpyX Invisible Ink Pen allows junior agents to write and read invisible messages. Write and share messages only other SpyX pen holders can read by using the pen's UV light to reveal the secret message. Open the pen up to find a secret compartment holding a supply of paper for all of your messages. The SpyX Invisible Ink Pen is a must-have for any spy collection, and is sure to bring a smile to your junior agents face. SpyX provides junior agents with all of the gadgets needed to spy like a pro. Playing spy is a fun way for kids to use their imagination while learning valuable skills through role play. Fun toy for ages 6+. Collect all SpyX toys for the ultimate spy play experience.