Staedtler Lumocolor Correctable 305M-5 Green Dry Erase Pen, 1.0 mm Medium Point. Non-permanent dry erase pen. For Film, whiteboards and smooth laminated surfaces. Integrated wiper on end of each pen. Water-soluble. The ink from this marker once dried, will not accidentally rub off of a dry erase surface. Someone could rub their hand over it and it would not rub off. To remove the ink, you need to use the integrated wiper on the end of the marker, or a dry erase eraser. This marker is excellent for use with conference room tables covered with 3M Post-it Dry Erase Surface, item number M3ADEF8X4.