• Package: 30 pens, reusable invisible pens with built-in lights have 10 different colors, but the ink is the same color(3 pcs of each color).
• Health and Safety: Harmless and flavorless ink is permanent but washable, a better gift for children. Children will like invisible ink pens.
• Family time: Children could use a spy pen to write secret messages and play detective games with their parents, spend happy family time together.
• Application: Invisible ink pen is suitable for T-shirts, paper. We use invisible pens in family activities, school activities, parties.
• Brand Guaranteed: Please contact us for a free replacement or refund, if you're not satisfied with invisible ink pen.