Channel your inner secret agent and swap top-secret intel with these clever invisible ink pens. Write hidden messages that vanish once dry, only to be revealed by your fellow operative using the special developer pen. This kit comes packed in a sturdy metal tin and includes professional tips for master-level covert communication. It's the perfect gear for any budding detective looking to keep their investigations strictly classified.
| Brand |
Thames and Kosmos |
| Series |
Spy Labs |
| Material |
Metal, Plastic |
| Ink Type |
Invisible and Revealing |
| Recommended Age |
8 Years + |
| Storage |
Reusable Metal Tin |
| Contents |
Invisible Ink Pens, Developer Pen, Instruction Guide |
