DirectGlow Invisible UV Blacklight Reactive Pen Ink Marker (Blue, 6 Markers)
You get six markers. 2 blue, 2 red, 2 yellow. Completely invisible in normal light. Glows brightly under UV blacklight. WARNING- Ink formula designed and manufactured by DirectGlow LLC. Markers purchased from other sellers on this product page may be lower quality and not as pictured.
