BIC PrevaGuard Round Stic Pen, Stick, Medium 1 mm, Black Ink, Black Barrel, Dozen - BIC Prevaguard Round Stic Ballpoint Pen contains an antimicrobial agent incorporated into the plastic that protects the pen itself by suppressing the growth of bacteria, algae, fungus, and mildew. These products protect the pens themselves and do not protect users or others from disease-causing bacteria, viruses, or germs. The antimicrobial agent should last the lifetime of the pen's plastic unless the plastic is destroyed. Along with the antimicrobial agent on the pen, the Round Stic Pen is the BIC product you know and love. This pen also features a medium 1 mm ballpoint that delivers smooth writing to create vivid, highly visible lines ideal for note-taking, drafting, doodling, and other writing activities. PrevaGuard is a registered trademark of Koozie Group.