The Caroline magic felt-tip pen by Djeco from the Lovely Paper stationery line makes it possible to write invisible messages. The secret texts and drawings only become visible under the light of the integrated UV lamp in the pen cap. The handy magic pen has a length of 15.5 cm and is decorated with a colorful jungle motif featuring a tiger head, a bird, and tropical leaves, among other things. The batteries required to operate the UV lamp are already included, so the creative writing fun can begin right away.