Faber-Castell Neon Marker. Fibre-tipped pen with a 1.5mm tip. Will mark most surfaces, including paper, cardboard, glass, plastic, metal and stone. Odourless, water-based ink which is smudge- and splash-proof. After fixation in the oven at 160°C the ink is waterproof, but not dishwasher-proof. No need to shake or pump.