Wilson Jones 3 Inch 3 Ring Binder, Heavy Duty D-Ring View Binder, Extra Durable Hinge, Black (W385-49B) D-Ring holds up to 40 percent more than standard round rings CleanView material to prevent toner and ink markings No-Gap locking D-rings stay aligned to keep pages from falling out Back mounted ring helps pages lay flat Two interior pockets for extra storage