SUNVORE Magnetic Whiteboard Eraser for White Boards Made of foam and felt, lightweight and durable, can serve you a long time Compatible with white/ black boards, dry erase sheets, melamine, porcelain and glass surfaces, to clean the whiteboard effectively, you need to press the erasers a little bit harder These magnetic dry erasers are easy to be used and cleaned up, just need a little soap and water, washed by hand quickly and easily, air dry