Durable reference binder features XtraLife Hinge to prevent tearing along seams. Steel round rings are equipped with dual opening and closing triggers for easy sheet removal and insertion. Spine-mounted, nonlocking rings offer a 3" capacity to hold approximately 625 sheets. Horizontal pockets inside the front and back covers are perfect for storing loose documents. Each pocket holds 40 sheets. Cover is made of a MicroFine suede vinyl finish material. Letter-size binder also features exposed rivets and a sturdy chipboard core. Binder is made with a high percentage of post-consumer material.