Since 1882 Prang Art & Craft solutions maintained an uncompromised quality to ignite the passion of our valued creative customers. Dive into a Limitless coloring journey with the brightest color quality and the most durable bullet tip in the market that will outperform any other marker. Reliable performance with a special formula that won't bleed through the paper & wont dry even when the cap is off for over 24 hours. AP certified Non Toxic