STAEDTLER's Mars plastic eraser is premium quality for first class erasing performance. The eraser produces minimal crumbling, with little wear, making it long-lasting. The Mars eraser comes with a sliding sleeve for convenient handling, ensuring excellent erasing results. The advantage of STAEDTLER's plastic erasers is that they rub off more coarsely than rubber products, so they hardly stick to the paper. This guarantees easy removal of any eraser crumbs. Manufactured using phthalate-free and latex-free PVC.