Water-based Ink is ,odorless,non-bleeding, , kid-friendly design.A good gift for Kids and adults with family and friends1 X PenMarks on virtually any surface: metal, pottery, wood, rubber, glass, plastic, stone,paper and metal etc.surface, Including dark and colored paper results are and bright,not just glittery paper,Made with specially formulated, opaque, permanent ink, Waterproof,and fade . No shaking or pumping needed to get the marker started- simply uncap and write.Metallic markers feature brilliant, permanent, opaque ink that requires no shaking and works beautifully on both light and dark surfaces.Work perfect on dark surfaces and paper.