Platinum Preppy Refillable Highlighter - Yellow
The Preppy highlighter, like the fountain pen, is refillable and takes Platinum converter or cartridges. It resembles the Preppy fountain pen in many ways, except it has a broad felt tip to serve as a highlighter.
Each pen comes with a highlighter ink cartridge that matches with the colour of the pen cap and feed. You may convert the pen into an eyedropper with some silicone grease and an o-ring (sold separately).