Experience color like never before--differentiate yourself with the deep, rich write of BLX black-infused ink. Ideal for the business traveler--contains a vented refill so pen won't leak or explode due to a change in cabin pressure during flights. Quick-drying, acid-free, archival-quality ink is fade- and water-resistant to last over time. Exclusive uni-flow ink system ensures a steady flow of waterproof, fade-resistant ink of consistent smoothness and color intensity down to the last drop. Micro point for fine writing. Uni-Ball Vision Ballpoint Pen blx, Micro Point.