This Uni POSCA PC-3M Poster Marker has water-based pigments which can be blended when wet or overlaid when dry. The have a medium, 1.3 mm tip which lets you draw lines that can be read from a distance. The ink will come out opaque every time and will not fade over time.
Posca Paint Markers are acrylic paint pens packed with high-pigment, light-fast, long lasting ink. The ink is waterproof, fade resistant, non toxic, with vibrant colours. Posca's can be used on metal, wood, glass, plastic, plaster, canvas and colouring books. They are used by artists, auto dealers, surfboard artists, auto body shop estimators, sign writers, art & craft and for colouring in.