The fisher Zero Gravity Pen is 5 1/4 inch long wehn closed. Matte black rubberized triangular body. Pocket clip. Push button to open/close. Loaded with medium point black ink cartridge. SPECIAL ink formula allows cartridge to last twice as long as average cartridge. Uses Fisher pressurized refill. Gift boxed. Writes reliably under extreme conditions: over fingerprints, over Grease, extreme cold (-50 DegreeC), extreme heat (+200 DegreeC), over wet paper, in a vacuum, and at any angle, even upside down.