The matt is all about that flat

fine-pointed brush

The markers are filled with liquid acrylic paint

it's fully waterproof

using the same flat

stealth ink mini marker 20 mm hiddenproduct The matt is all aboutThe Stealth Ink Mini Marker is the little stealth bomber in your pocket small, quiet, and seriously powerful once it hits. When you first write with it, the ink is totally transparent, so nothing shows. You can tag, write, or leave a mark, and itll look like nothings there. Then, slowly, as it gets hit by UV light from sunlight or even indoor lighting the color starts to come alive. After a few hours, it turns into a deep dark brown that sticks hard