Map pens are a must for any serious map case or navigation kit. Staedtler Lumocolor markers are routinely used by military leaders to mark maps for mission planning and navigation. They have a fine tip for precise positional marks and water-resistant ink for use in real-world conditions.
Lumocolor inks project in true, vivid colors that never fade or distort. With the 0.6mm tip, you get clean, high-definition lines that dry immediately on a glossy film or any surface. The permanent ink is water-resistant and can be removed from some surfaces with alcohol. They can be left uncapped for days without drying up. Pack of four comes with Red, Blue, Green, and Black.