Value Plus storage binder is made with a heavyweight chipboard to add strength and durability to the traditional value binders. Angle-D design provides up to 25 percent more capacity than round-ring binders. 1″ capacity holds up to approximately 250 sheets. D-rings mounted on the back cover let pages lie flat and reduce wear on paper. Rust-resistant ring metal offers double boosters for even opening and closing. Pocket inside front cover holds loose documents. Special ribbed seal adds flexible strength at the hinge. Premium-quality vinyl is tightly sealed over rigid board. Binder also offers exposed rivets and a label holder for quick identification.