BIC Intensity Advanced Dry Erase Markers deliver both low odor and bold writing. With their long-lasting supply of liquid ink, these markers provide smooth, consistent ink flow on whiteboards, glass, and most non-porous surfaces. These markers also offer a visible ink supply, so you can easily check if you're running low. Marks erase easily with a tissue or cloth. Available in a variety of bright, vivid colors, these dry erase markers are a great choice for home, school, or the office.