edding 30 Brilliant Paper Marker, 1.5-3mm Bullet Tip, 4/packBrilliant Permanent Pigment Marker Particularly suited for extremely lightfast labelling of paper and cardboard. The permanent water based pigment ink does not bleed through the paper. Also suitable for marking, highlighting and labelling other materials such as plastic, metal and glass. For use in aerospace, laboratories and hospitals labelling PVC blood infusion bags. The edding 30 is Waterproof, smudge proof, wear resistant and heat resistant (up