Children think that they are secret agents with these pens lay mystery adventures and writing clues for each other.
Invisible marker pen with uv light.
4x uv light pen invisible ink security marker built in ultra violet led light.
If you can see the marker when you write then you need to squeeze more ink out of it.
Then put the cartridge into the front part.
To use write with it.
Invisible ink spy pen with built in uv light magic secret message gadget us ship.
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1pc invisible ink spy pen with built in uv light magic marker for drawing kids.
Push the front piece onto the back piece.
The invisible ink pens are very popular around people which can create a lot of fun.
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Spy pen invisible ink uv light magic secret messages party kids gift.
Invisible ink pens uv light black light magic highlighter secret message 12 pack.
Write a secret message mark your valuables or have a blast at the next glow party.
Put the cap on.
Start with marker tip and slide it back into place.
Permanent ultra violet security marker pen invisible uv ink stickers uv light.
To view look at with uv light.
Uv light pen invisible ink secret marker pen with ultra violet led black light.
Easily identify and claim all of your property when it s marked with this invisible permanent ink viewable only with uv light like the included blacklight so you can scan for your belongings in an instant provides ultimate versatility by permanently writing on most materials where other products would have wiped off.
One blue one red and one yellow.
These invisible uv ink markers by directglow are completely invisible in normal light and glow incredibly bright in uv blacklight.