klumuke Invisible Ink Pens with UV Light, Magic Spy Pens with Mini UV LED Keychain Flashlights for Secret Messages, Disappearing Ink Pens with Black Light for Kids, Ideal (3PCS)

Engaging and Mysterious: These invisible ink pens write messages that are invisible in regular light but reveal vivid colors under UV light, sparking curiosity and excitement.

Creative Fun: Perfect for kids and adults, these black light pens are ideal for creating secret notes on paper, fabric, or skin, enhancing creativity and fun.

Multi-functional UV Light: The mini UV LED keychain flashlight can also be used as a currency detector, revealing hidden security features on various currencies including USD, EUR, GBP, and more.

Perfect for Special Occasions: Great for birthdays, parties, Christmas, and Halloween, these invisible ink pens add an element of surprise and intrigue to treasure hunts, riddles, and themed events.

Complete Package: Includes 3 invisible ink pens with blue, pink, and yellow ink, each measuring 5.5 x 0.59 inches, along with 3 compact UV LED keychain flashlights (2.75 x 0.98 inches).