Double-sided marker creates thick or thin lines with two tip choices, broad bullet tip for bold lines or extra-fine tip for detailed, precise lines. Perfect for color-coding and decorating planners, journals and notebooks. Create fun doodling and lettering styles. Water-based ink doesn't bleed through most papers. Durable fiber point tips are long lasting and maintain shape after use. Quicker drying time than gel pens. Long lasting fiber tips maintain shape after repeated use.