These fluorescent neon Pen 68 sets are perfect for adding pops of vivid color to journals, craft projects, and more. With their sturdy bullet tips and brilliant, intense colors, Pen 68 fiber tip pens are perfect for layout, detail and sketching. The odorless water-based ink will not bleed or dissolve toner or ink of permanent markers. Pens can be left without their cap for 24 hours without drying out.