Smooth-flowing ink for smudge-resistant writing on every page Translucent barrel offers a visible gel ink supply. Water-based ink is smudge-resistant and acid-free for long-term storage. Cushioned grip lessens writer's fatigue - perfect for extended use. Convenient pocket clip provides ultimate portability. Zebra Pens part of a large selection of office supplies. Zebra(R) Sarasa(R) Retractable Gel Pens, Assorted Colors, Pack Of 5 is one of many Gel Pens available through Office Depot. Made by Zebra.