Hidden in plain sight - that’s the secret of Legami’s Unicorn-themed Invisible Ink Magic Pen. Thanks to the dual tip, you can write in classic blue ink and then, in the blink of an eye, switch to spy mode with the invisible ink. Only by using the special UV light on the lid will what you’ve written become visible. Perfect for love letters, secret messages with your bestie and notes for class quizzes. Teacher won’t suspect a thing! Foil details Product measurements: Ø 1.3 x H 15 cm