"Faber-Castell DUST-Free eraser series for lead and color pencils cause less dust and do not contain harmful phthalate plasticizer Phthalates have been reported to cause several undesirable effects when exposed to the human body To date, phthalates are still commonly used to produce erasers around the world The balanced plastic mixture guarantees soft and smear-free erasing Dust rolls together Excellent clean erasing Extra soft for effective clean erasing of blacklead pencils Comfort edge - Added comfort for erasing Comes with protective sleeve"