The official Sharpie Pen blurb:
Now you can have the inspiration and confidence of a Sharpie for all of your everyday writing tasks!
The new Sharpie Pen makes a bold, vivid mark like only a Sharpie can, but won’t bleed through paper.
A unique extruded plastic tip assures durability and line-width consistency, while the fine point delivers crisp lines and precise writing.
Quick-drying, permanent ink is smear-resistant,water-resistant, and fade-resistant.