Vivid colors, crisp lines. Quick-drying, water-based ink resists smearing. Writing won't bleed through paper. Acid free on paper! Point Guard prevents tip from fraying for extended life. Felt tip provides bold and expressive lines. www.papermate.com. Guarantee: If your product does not perform properly, please return for replacement: In the United States, return to: Sanford, L.P., 2707 Butterfield Road, Oak Brook, Illinois 60523. In Canada, return to: Sanford Canada, 586 Argus Road, Oakville, ON Canada L6J 3J3. www.sanford.com. Made in Mexico.