incredibly Durable Binder Offers A Tear-resistant Pocket That Is 10 Times Stronger Than Economy Binder Pockets, Sleek Look And Top-of-the-line Durability And Flexibility. Lightweight Material Is Stronger Than Chipboard With Reinforced Flexible Spine Hinge For Long-lasting Use. Hinge Opens And Closes More Than 1 Million Times. One Touch Slant Rings Provide Easy Access To Your Letter-size Documents And Higher Page Capacity Than Round Rings. Rings Are Back-mounted To Reduce Wear On Your Pages. Two Inside Pockets Each Securely Hold Up To 200 Sheets. Inside-loading, Frame-view Front Cover Offers Polished Customization. Design Also Allows Easy Access To Full-length Spine Insert From Inside The Binder.