Constructed from one seamless piece of solid polypropylene One-piece, extra-strength, hard poly binder cover prevents cracking. Archival-safe, non-stick and PVC free. ONE-TOUCH EasyOpen locking D-ring Poly Binder opens and closes with a simple motion. Keep notes and other items in the two clear interior pockets. Will not transfer ink or toner so your pages stay clean. Customizable front and back, plus 4in. easy insert spine labeling for quick identification and reference.