Non-abrasive eraser. 33% cleaner erasing (Internally tested to erase 33% better than regular erasers with less crumbs on standard writing paper)! Latex-free. High quality latex-free eraser removes lead easily and cleanly with very little pressure. Block style is perfect for getting into little corners or erasing large areas quickly. No smudges, no paper tears and no ghosting. Doesn't crack or harden with age; remains soft and ready to use. Comes with protective sleeve to keep you and the eraser clean. ACMI: Art & Creative Materials Institute certified - AP. Conforms to ASTM D 4236. Writing starts with us. 33% cleaner erasing! Won't tear paper. Latex-free. Please recycle packaging. Limited Lifetime Warranty (Valid in USA Only): Each Pentel product is warranted for life against failure due to defects in materials and workmanship. For warranty service, return product for free repair or replacement to: Pentel of America, Ltd., 4000 E. Airport Dr., Ste. C, Ontario, CA 91761, USA, Attn: Quality Assurance Department. Visit us at Made in Taiwan.