Locking rings of the EasyOpen ClearVue Slant-D Ring Binder open & close with one touch. Locking mechanism engages instantly when closed, eliminating two-handed, two-step operation. Delayed tension means closing rings will not clamp down & pinch fingers if they get in the way. EasyOpen Slant-D rings hold 25 percent more sheets than standard round-ring binders. Back-mounted steel rings reduce wear & let pages lie flat. 4" capacity holds approximately 775 sheets. Horizontal inside pockets offer storage for loose documents, & each pocket holds 40 sheets. Clear, nonglare overlays on front, back & spine hold custom title sheets. Design also includes exposed rivets & a sturdy chipboard core.