Abstract: A ring binder having flexible ring elements for holding sheets of paper or the like in an organized manner. The binder includes a backplate integrally coupled to a number of ring elements by a living hinge to allow flexing of the ring elements to and from a locked position. The ring elements each include a flanged end which is inserted into an entrance of a keyway, then pushed past a narrow neck to a locked position. Movement of the ring away from this locked position to the entrance is inhibited by a camming surface defined by the backplate.