Tegeme 4 Pcs Invisible Ink Pens and 4 Pcs UV Flashlights, Silver and Black

Invisible Ink Pen Favors: the package includes 4 pcs silver UV blacklight flashlights ( batteries not included), and 4 pcs blacklight pens with light; Customers can write their secret messages on the paper, which can only be revealed by shining it with UV light, suitable for spy games, family activities
Reliable and Safe: this black light flashlight mini is made of quality waterproof and impact proof aluminum alloy, so it can be applied on rainy days; The disappearing ink pen is made with washable, safe ink and a sturdy plastic body
Suitable Size: this invisible ink pen measures 5.75 x 0.43 inch, which is portable and easily put into your packet or bag; The UV light flashlights vary in sizes of 5.24 inch and 3.58 inch; Customers can use the invisible pen to draw, doodle and write down their thoughts, discover hidden messages and create their own secret codes, suitable for playing games such as escape room, treasure hunt, riddles, detective games, skin tattoos, etc