The Edding 28 Ecoline Whiteboard marker is made from 90% percent recycled material, including at least 83% post-consumer materials. It contains lightfast and quick drying ink which is can be wiped from virtually all non-porous surfaces. The cap-off technology means that the cap can be left off for several days without the tip drying out, tested according to ISO 554. The round nib gives a stroke width of 1.5-3.0mm for a bold and clear line.