The STAEDTLER 526 is our first eraser made from up to 56% natural and renewable material and it´s sleeve is up to 100% tree-free. It is part of our sustainability concept and demonstrates STAEDTLER’s innovative strength. Made from up to 56% natural and renewable materials. Sleeve Paper up to 100% Natural Material, obtained from sugar cane harvest byproducts. Phthalate-free and latex-free eraser.Made in Germany. Sliding outer sleeve for easy handling. Blistercard with 2 pcs