The Uni Pap marker has a round tip and water-based pigment ink that does not bleed through paper and provides opaque coverage with a matte finish. It is dark red, with a line width of 1.8–2.5 mm.

It writes on plastic, paper, glass, porcelain, terracotta, wood, fabric, cardboard, metal, stone and skin. The ink is odorless, lightfast and non-toxic, and the tip...