File folders are made of 100 percent recycled material with a minimum 60 percent post-consumer material. Letter-size file folders are made with a water-based adhesive and chlorine-free process to protect the environment from harmful chemicals and exceed Executive Orders 13514 and 13423. Design also features double-ply top tabs in assorted 1/3-cut positions and 11 point, acid-free stock. Tabs offer double-ply, reinforced strength. Bottom is scored for 3/4" expansion.