BIC Prevaguard Round Stic Pens With Antimicrobial Additive, Medium Point, 1.0 mm, Black Barrel, Black Ink, Set Of 12 Pens - The BIC PrevaGuard Round Stic contains an antimicrobial agent incorporated into the plastic that protects the pen itself by suppressing the growth of bacteria, algae, fungi, and mildew. It features a versatile 1.0mm medium point that creates vivid lines, making it ideal for a variety of writing applications from note-taking to doodling.