EXPO® Vis-à-Vis Wet Erase Markers are ideal for writing on overhead projectors, transparencies and laminated calendars. The ink wipes off easily from most non-porous surfaces with a damp cloth.• Provides clear, bright markings on overhead transparencies• Ink will not fade or bubble under lamp heat• For use on overhead projectors, transparencies and laminated calendars• Ink easily wipes off with a damp cloth• Available in fine tip for thin, accurate lines• Each pack includes 4 markers in 4 colors