These save, no-mess opaque markers require no shaking or pumping and feature 1mm fine points. The paint is odorless, non-toxic, water and fade resistant. It is suitable for acid-free environments and won't bleed through paper and vellum. These all-purpose markers also write well on glass, plastic, metal, cd's and many other surfaces. Great for memory books and crafts. they meet ACMI non-toxicity standards and are safe for children to use.