Use dry-erase markers for marking on whiteboards and most nonporous surfaces, including glass. Feature unique patented Thumb Button Cap for one-handed cap release, extra-large ink supply and Microban for antimicrobial protection. Ink flows smoothly on the surface and wipes away clean with a dry cloth or eraser. Erase with no residue. Large barrel is made from durable plastic with a molded chisel tip. Vented cap conforms to small parts safety specifications. Certified AP nontoxic.