Product Review

Boys Girls Great Party bag fillers toys for kids.
Writes on most surfaces. With built in Ultra Violet Light, Kids will write plenty of secret messages to each other and its not visible to the naked eye turn the UV light on the writing appears!!

Colorful Invisible Ink Spy Pen With Built in Uv Light Marker Stylish Invisible Ink Pen for Drawing Fun Activity Kids Party Favors Ideas Gifts

Specification:
Item Name: Invisible Ink Pen
Material : Plastic
Plastic Type : PP
Gender : Unisex
Warning : No
Quantity: 16
Features : Flashing
Size: length: 13cm
Color: Red,Green,Yellow,Blue,Black,Purple,Pink,brown

Features:
1) Write invisibly secret messages, security markings etc. and only when you shine the light on the message you will reveal the secret behind.
2) The spy pens have the UV light installed in the cap so you dont need to buy a spare light, which also comes with battery in it, very convenient to use.
3) Harmless and flavorless invisible ink, you can write everywhere: T-Shirts, paper, skin and any surface.
4) The uv pen is durable but washable, very safety to use.
5) Invisible Ink Pen only, other accessories is not included!

Note:
You can write on most surfaces, but whether it can stay on the surfaces, it depends on what kind of the material you write on. If you write on the papers, it can stay on permanent; if you write on the metal or plastics, it may couldn't last long, because it will be erased easily due to the characteristic of the metal and plastics.