The size of this label is perfect for return addresses or index tabs. USDA Certified Bio Preferred labels are 100 percent tree-free. Instead of trees, they are made from sugarcane bagasse fiber and other easily renewable, bio-based agricultural waste. These bright-white, acid-free labels won't become brittle or yellow over time. Benign adhesive is safe to recycle yet permanent so your labels stay put. Compatible with desktop dry-toner copiers, laser printers and inkjet printers, labels will not jam or smudge.