ONE-TOUCH™ Easy Open™ rings open, close and lock with one simple motion. Heavy-duty construction. Dual-Fold cover hinge is crack-resistant for durability. Transfer-safe material will not damage photos or documents. Includes self adhesive spine labels for easy identification. Binder Type: Ring; Binder Style: Non-View; Binder Size Capacity: 4"; Binder Sheet Capacity: 880.