Product details:

Reversible tips for prolonged use Non-toxic and water-based Mixing balls inside the barrels keeps paint consistent Posca Acrylic paint markers have a following all their own. These water-based markers contain opaque alcohol/solvent-free paint that covers well, is blendable, and dries quickly. Internal ball inside the barrel mixes the paint for even consistency and optimal results. Can be used on paper, glass, cardboard, wood, porcelaine, metal, textiles, ceramics, plastics and much more. They can also be used like a watercolor.