With the green Edding Retract 12 whiteboard marker you can write legible green text on the whiteboard. The mark draws lines between 1.5mm and 3mm thick. Edding Retract 12 markers have a pressure mechanism that allows you to press the point into the housing just like a ballpoint pen. You can pick up the marker and use it immediately, without having to remove a cap from the marker. The whiteboard marker has low-odour ink (refillable) and does not dry out thanks to the smart sealing system.