High quality liquid chalk marker, non-toxic, non-smudging (when dry), resistant to fading, staining and light rain. Easy to use: simply shake, press the nib, write and allow to dry for a couple of minutes. Then wipe clean with water to write again. Suitable for Chalkboards, glass, metal, plastic and any other nonporous surfaces. Chiseled or block nib, white and assorted colours.