Le Pen 0.3mm micro-fine plastic tip pens create precise, clean lines. Filled with quick drying, smear resistant ink that is acid-free and non-toxic. Great for journaling, scrapbooking, note taking, letter writing and more. Ink is not waterproof. This six pack of neon colors includes pens in these vivid colors: Fluorescent Pink, Fluorescent Violet, Fluorescent Blue, Fluorescent Green, Fluorescent Yellow and Fluorescent Orange.