Contour heavy-duty locking round rings hold your documents securely and are mounted on inside back cover to allow pages to lie flat and reduce wear on paper. Fits top loading sheet protectors and oversized indexes with ease. Stylish curved back design gives an upscale appearance. One inside pocket on the front cover allows you to store additional loose papers conveniently. Maximum Capacity Range ("): 4 in; Sheet Capacity: 575; Color(s): Black; Binder Sheet Size: 11 x 8 1/2.