The Artline Whiteboard Marker 157Ri is a popular choice for writing on whiteboards. It is known for its vibrant colors, smooth writing experience, and easy erasability. The "Ri" in the name typically stands for "refillable," indicating that this marker can be refilled once the ink runs out, making it a more sustainable option compared to disposable markers. The Artline 157Ri is often favored by teachers, presenters, and office workers for its quality and reliability in writing on whiteboard surfaces. Vibrant Colors: The markers come in a range of vibrant colors that are highly visible on whiteboard surfaces. Refillable: The "Ri" in the name indicates that the marker is refillable, allowing you to easily refill the ink once it runs out, making it a more eco-friendly option. Smooth Writing: The markers provide a smooth writing experience, allowing for clear and consistent writing on whiteboards. Easy to Erase: The ink is designed to be easily erased from whiteboard surfaces, making it convenient for making changes or corrections during presentations or meetings. Durable Tip: The markers typically come with a durable tip that can withstand regular use on whiteboards without wearing out quickly.