Set of 3 Invisible UV Blacklight Ink Marker Blue/Red/Yellow [Office Product]

These UV ink markers are completely invisible in normal lighting, but illuminate incredibly bright under UV blacklight! Use these ink markers to implement security procedures, secretly mark your valuables, write hidden messages, artistic application, or just for plain fun! Each marker is full of our special blend of UV ink, so you get long lasting UV special effects. Don't be fooled by other sellers, these markers are among the brightest available on the market today. We guarantee performance and your satisfaction 100%!