Locking round ring on this view binder opens, closes and locks with one simple motion OneTouch EasyOpen locking mechanism engages instantly when closed, eliminating twohanded, twostep operation Delayed tension means closing rings will not clamp down and pinch fingers if they get in the way Once fully closed, the steel spinemounted rings lock, and the tension engages to secure your papers 112 capacity rings hold approximately 325 sheets Nonglare covers have crystalclear overlays on the front, back and spine for easy customization Design also has a sturdy chipboard core, exposed rivets and horizontal pockets on the interior front and back covers Each pocket holds 40 sheets of loose documents