This Heavy-Duty View Binder may be tough, but using it is surprisingly easy. The One Touch EZD locking rings open and close smoothly with a single press of the innovative lever. Effortlessly add and remove hundreds of pages as often as you"d like. The strong Gap Free rings align precisely to keep a firm hold on each sheet. Want to soften this binder"s image? Customize a title page with a free template from avery.com. Cover material is PVC-free polypropylene. Made with 100% recycled chipboard. Durable design, large capacity and user friendliness make this binder a well-rounded organizational solution.