D-Flexionï¿½ shock absorbing spring system diffuses tension to make writing an ultra-smooth experience. Full-length rubber grip widens at the tip and features a textured design that's both practical and attractive. Gel ink and precision roller ball tip deliver effortlessly easy, vivid marking. Acid-free, fade-resistant ink. Special Ink Type: Gel; Pen Style: Retractable; Ink Color(s): Blue; Pen Type: Roller Ball.