Zig Posterman Markers

Use these markers for making signs on chalkboards, glass or mirrors. These are great for school or business- creating things like posters, menus, advertisements and more.
Posterman ink is resistant to water, but will clean off glass, most chalkboards and other non-porous materials with ammonia-based cleaners. It's always recommended to test in a small area first to see how well the marks can be removed.