Basic DRing View Binder offers a clear, nonglare overlay on the front cover, back cover and spine for easy customization and identification SlantD rings hold 25 percent more paper than traditional binders Backmounted metal rings allow pages to lie flat Two triggers on the ring mechanism provide easy access to your documents 3 capacity holds up to 725 sheets Clear pockets on the inside covers offer extra document storage with a 30sheet capacity for each pocket Design also features a sturdy chipboard core and exposed rivets Threering binder is made of polypropylene