Uni Posca Paint Marker features an opaque, water-based ink that permanently sticks to surfaces like paper but can be removed from glass and metal. This nontoxic, waterproof marker is perfect for layering without smearing, making your designs stand out on both light and dark materials. To activate, shake the marker with the cap on, then uncap it, press the tip against paper, and repeatedly press down until the ink flows smoothly.

This pen has an extra fine tip, whichproduces a line about 0.7 mm wide.