The special formula uses a twin structure of special foam and an erasing polymer. It achieves a high level of erasing property, a light force that can be erased and erased. The eraser has a stiff shape, so it is suitable for erasing fine areas without breaking. Keep out of reach of infants. Please store it inside the case after use. For pencils; Material: Body: PVC-P; Rolling: Recycled paper pulp formula; External Dimensions (Width/Length/Thickness): 7.9, 25.0, 4.7 inches (20, 63.5, 12 cm)