Dry Erase Vs. Wet Erase Markers - Understanding the Differences
Amazon.co.uk: Wet Erase Marker
Shuttle Art Wet Erase Markers, 10 Colours Fine Tip Whiteboard Pens, Smudge-Free Wipe with Water Whiteboard Markers for Laminated Calendars, Overhead Transparency Project, Whiteboards, School Office : Amazon.co.uk: Stationery & Office Supplies