Uni POSCA Markers - vivid paint marking for a huge range of uses. Uni POSCA Markers provide vibrant colours for illustrations and hobbies. Water-based pigment ink is lightfast and waterproof and writes on virtually any surface - yet does not bleed through paper. The wide range of opaque colours cover each other well. Broad fluorescent markers are especially good for outdoor billboards. Writes on glass yet easily scrapes off. Does 'POSCA' mean anything or stand for something? We dunno! - answers on a postcard please. We do know however, that these are brilliant markers with a multitude of uses. See the dedicated POSCA website for news, information and workshops.