Our extra large Opticz Jumbo Blacklight Markers are filled with our our signature blend invisible UV ink that is undetectable to the eye under normal conditions but glows brightly under black light. Available in 3 ultra bright colors: blue, red, or yellow.
Use them for secret spy messages, admissions, escape rooms, glow parties or for security. Safe for skin when used as directed. Enjoy making unique and fun designs that will really glow under any ultraviolet light. Also great for security purpose such as identifying your belongings or authentic returns verifications! Please note markers only illuminate in black light; they do not glow in the dark. Please also note this is security grade ink and it does not wash off easily.
This creative writing utensil has a felt chiseled tip allowing for thicker, more pronounced stroke application such as highlighting. Or use the pointed end of the tip for a more delicate and precise stroke for finer details like writing or coloring within borders. Extra Large marker body houses 2.5 times more ink than our standard-sized marker for increased longevity and value.