Magnetic Whiteboard Eraser brightens up your magnetic whiteboard with its fun and colorful design. It is easy to grip and hold for adults and children. Use with dry-erase markers. Eraser is made from a durable foam with a black felt surface for erasing. Built-in magnet helps to easily stick to magnetic whiteboards and other magnetic surfaces.Magnetic Whiteboard Eraser brightens up your magnetic whiteboard with its fun and colorful design. It is easy to grip and hold for adults and children. Use with dry-erase markers. Eraser is made from a durable foam with a black felt surface for erasing. Built-in magnet helps to easily stick to magnetic whiteboards and other magnetic surfaces.