A whiteboard marker is a writing instrument designed for use on non-porous surfaces, such as whiteboards. It typically contains a quick-drying, erasable ink that allows for easy writing and drawing. The markers come in various colors and tip sizes, making them versatile for different applications, from classroom teaching to business presentations. These markers are often made with a plastic barrel and a felt tip, which helps control the flow of ink. To erase the markings, a dry eraser or cloth can be used, making them convenient for temporary notes and illustrations. Proper storage, such as keeping the cap on, helps prevent the ink from drying out.