Vision Elite Rollerball Pen is ideal for business travelers because the pen won't leak with a change in cabin pressure. Airplane-safe pen delivers skip-free writing. Uncapped pen displays ink supply. The uni-flow ink system creates a steady flow of water-resistant ink and smooth, consistent color. Exclusive pigment-based ink forms an indelible bond in paper, for intense coloration and document security. Use the archival quality, acid-free ink for valued documents.