Fast drying pigment ink that stops smudging and delivers ultra fluid writing. Cool Pens Gift: Best gift for a birthday, Children's Day, or back-to-school gift. For kids, students, teachers, family, friends, co-workers, Birthday. Perfect as journal pens, planner pens, journaling pens, teacher pens, grade assignments, office supplies, planner accessories, and classroom prizes. Great for school, home, office, work, business, club, party favor, and organization activities.