Faber-Castell Dust-Free eraser series offer the best performance in clean erasing. It also does not contain harmful plasticiser - Phthalate. The unique Dust-Free formula makes the eraser soft and guarantees excellent clean and smear-free erasing. The eraser residue and dust easily roll together for easier clean up. The comfort edge (chamfered corners) are thoughtfully crafted for precise erasing and prevent breakage. Also, the erasers are latex-free and dermatologically tested & approved.