Toysmith Invisible Writer
The Toysmith Invisible Writer 2-in-1 Pen is perfect for a pair of sneaky siblings or the secret agent of the house. One side holds typical black ink, and the other side holds invisible ink. Your secret message in invisible ink can only be read by using the light in the pen's cap!
Ages 8 and up
WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years.