Quality - Uses high-quality water-based ink, high-pigment white ink, work brilliantly, writing smooth and great coverage, not to feather, smear, or bleed through most papers, as well as be fade resistant and waterproof Safe and Non-toxic - Non-toxic, acid-free water-based ink white colored pen, fast drying and don't blur with your hands and paper, elegant barrel, comfortable, that allows for smooth and effortless drawing Unique Pen Cap Design - Each comes with a secure cap to protect the ink, meanwhile it can be clipped on the book too, easy to carry, allows for smooth and effortless drawing, suitable for most people to use Highlight Pen - Used in conjunction with watercolor pens, colored pencils, markers, and paints, which is a good choice for artists drawing illustration, card making, scrapbook, envelopes Application - Suitable for dark drawing paper, colored paper, black paper drawing illustration, card making, scrapbook, black envelope, toned paper and photo album, and use invitations for weddings and parties