These UV ink markers are completely invisible in normal lighting, but illuminate incredibly bright under UV blacklight! Use these ink markers for blacklight security, secretly mark your valuables, write hidden messages, artistic application, or family fun for kids.

Product Features

  • 9 full size ink markers and 3 LED keychain lights included
  • Incredibly bright under UV blacklight (included)
  • Discreetly mark wedding invitations
  • Mark valuables in the event of a burglary or theft
  • Non-toxic and environment friendly

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