Transparent binder pockets are made of environmental protection material PP, waterproof, tear resistant and keeping clean, features clear, you can get the files you need at a glance. Features Wear-resistant Material: environmental protective PP Type: Side-opening pouches, hook and loop closure Dimension: Binder Envelopes: 9 1/5 x 11 3/5 inches. Application: great for 8.5’’ x 11’’ Paper and document organizer and storage Quantity: 10 packs clear 3 holes plastic envelopes.