Made of soft vinyl.
Vinyl Block Erasers, 2-1/2 x 7/8 x 1/2 Inches, White, Pack of 20 PK School Smart White Vinyl Erasers are non-abrasive and latex-free. Each eraser measures 2-1/2 x 7/8 x 1/2 inches. Soft eraser helps to erase completely without smearing or damaging paper and brushes away cleanly.Sold as 20 per pack.