BIC Mark-It® Black Fine Tip Permanent Marker. Wont dry out! When the cap is left off for 2 weeks. Long lasting color acid free ink*. *Acid-free ink, no added acid; no measurable pH. Won't dry out when the cap is left off for 2 weeks. Bold, long lasting color. Marks on just about everything including. Glass, metal, plastic, photos, foils, coated paper, oily and damp surfaces. Comfortable rubber grip. To find out more, visit our website www.bicmarkit.com. BIC performance policy. If you are not satisfied with the performance of this product, please return it to BIC and we will gladly replace it at no cost to you. Assembled in the U.S.A. of U.S.A. and foreign components. ACMI AP® art & creative materials institute certified. Conforms to ASTM D4236. Non toxic. Labels for education is a service mark of CSC Brands LP/Campbell Soup Company.