Common tip types are broad or conical marker tips for thicker lines, felt tips for expressive medium lines, and dual-ended pens that pair a broad (chisel or bold) tip with a fine bullet tip.
Many coloring pens include ergonomic or contoured rubber grips and cushioned comfort grips (especially on gel pens) to reduce hand fatigue during extended use.
Pack sizes vary, with common counts including 4, 6, 8, 10, 15, and 22 pens per package.
Special ink types include washable inks that remove from skin and clothing, thermo-sensitive erasable gel ink, and water-resistant or no-bleed pigment inks.
Dual-tip markers pair a broad chisel or bold tip with a fine bullet tip for highlighting and precise underlining. Soft translucent or water-resistant inks are often used for layering and journaling with reduced bleed-through.
