Zig Posterman Wet Erase Markers
Zig Wet Wipe markers go on like the Zig Posterman markers, except these marks will wipe off non-porous surfaces with just plain water on a damp cloth.
They work well on whiteboards and chalkboards, and clean off easily so they're great for use in the classroom. We've gotten excellent feedback from teachers! Also commonly used in stores and restaurants to easily update indoor daily special signs.