Locking D-ring Binder features patented Flexaround construction that prevents top-loading sheet protectors and indexes from extending outside binder cover. Soft-click locking D-ring opens in one easy motion. D-rings hold up to 25 percent more sheets than standard rings. Heavy-duty construction withstands frequent use, durability and style. Curved back spine gives upscale appearance. Design also includes interior pockets and a label holder.