Pigment Brush Pens are fiber-tip pens with a medium brush nib that contain premium pigments that provide exceptional color brilliance. Staedtler's Multi ink technology ensures extreme lightfastness—the ink retains its color fidelity, even after long exposure to light. It provides smudge-free overpainting once the ink has dried, with no ghosting or bleeding for almost all surfaces. Permanent and waterproof. Housing made of 97% recycled plastic (barrel, cap and end cap).