Use dry-erase markers with chisel tips for marking on whiteboards and most nonporous surfaces, including glass. Unique, patented "Thumb Button Cap" allows one-handed cap release. Each marker features Microban antimicrobial protection that lasts the lifetime of the product. Built-in antimicrobial protection continuously fights the growth of microbes, such as stain-causing, odor-causing bacteria. Low-odor ink flows smoothly onto the surface and wipes away clean with a dry cloth or eraser. Ideal for office or classroom use. Markers have a large ink reservoir for longer use. Certified AP nontoxic.