True Gapless" binder allows pages to turn smoothly without falling out and features a clear overlay for customizing the exterior. Pages flow smoothly because patent pending, one-piece rings have no gaps. Individual steel rings snap securely into their base and will not open when the binder is dropped. Back-mounted, locking rings can lie flat when not in use, which maximizes storage space and makes the empty binder easier to transport. 5" ring capacity holds up to 1,050 sheets. View binder offers view covers and spine, exposed rivets and white interior pockets that hold up to 20 sheets. Heavy-duty cover is made of sturdy, 32mm, chipboard board over polypropylene.