Ballpoint pen features an ergonomic triangular barrel that provides hours of comfortable writing. Glides smoothly and effortlessly over paper for maximum performance. Delivers approximately 3,000 yards of write-out. With airplane-safe ink, automatic pressure equalization prevents pen leakage while on the plane. Design also features a transparent barrel, and cap and clip that match the color of the ink. Acid-free indelible ink conforms to ISO 12757-2 to safeguard your documents with ink that cannot be removed. Nonrefillable.