Magnetic Chalkboard Eraser: Reusable eraser for markers is made of soft lint material, a type of microfiber. Durable and reliable, delicate texture, soft feel, not easy to fade or wear, nice water absorption performance. Magnetic Attachment: There is a round magnet on the back of the microfiber chalk eraser, which can be attached to any magnetic or metal surface, it can be easily found when needed. Perfect Size: The size of the chalk eraser is 12.7 x 7.5 cm (5 x 2.95 inches). Practical and lightweight design, suitable for both adults and children. Wide Application: Whiteboard eraser is a practical helper on a variety of occasions, such as at home, office meetings, school meetings, classrooms, game rooms, play centers, etc., can easily erase the handwriting on the whiteboard, provide convenience for people to writing on dry erase board.