Plastic Zip Closure Poly Envelopes are perfect to keep papers and documents neat and oraganized. They feature an easy to use zipper closure, so you have easy access to everything you choose to store. All zip envelopes have 1 inch expansion, exept for Purple Grid and Smoke Grid which have no expansion. Purple Grid and Smoke Grid also have business card slots. Clear 3 Hole Punched Plastic Binder Envelope Size: #10 (6 x 9.5 inches) Quantity: 3 per Pack Features a zip closure that is easy to open and close, making accessing papers a breeze. These high-quality poly envelopes are great for staying organized at home, the office, or school