Porous Point Retractable Permanent PenUltra-smooth everyday writing system with quick drying ink to prevent smearing. Water-resistant, acid-free ink won't bleed through most paper and soft cushioned grip provides additional control and comfort. Durable, fine point won't chip or break during longstanding performance. Bold color indicator helps distinguish pen ink colors. Special Ink Type: Permanent Water Resistant; Pen Style: Retractable; Ink Color(s): Blue.