Bold, erasable ink of these Marks A Lot Dry Erase Markers provides high visibility even from a distance. They write smoothly on whiteboards, glass & other nonporous surfaces. Ink wipes off easily with a dry cloth or eraser. The cap can be left off for up to 24 hours without the ink drying out. Bullet tip is great for creating clean lines in tight spaces. Nontoxic, low-odor ink makes them great for school, office & home