You can use this Ecoline 29 green whiteboard marker from Edding at the office, during presentations or lectures. It has a chisel-shaped tip and a writing thickness of 1mm - 5mm. The ink is erasable on non-porous surfaces. Forgot to put the cap back on? Don't worry, it won't dry out. Not even after a few days. The housing consists of 90% recycled plastic and the ink is easily refillable. This makes this green marker an environmentally friendly choice for your whiteboard.