The Case-it D-185 Zipper Binder can hold it all! This neat, zippered binder has extra-large 4-inch D-rings with 5-tab file folder for all your organization needs. The gusseted zipper allows you to access the file folders without opening the whole binder. It comes with a unique angled zipper design along with a handle and shoulder strap for easy mobility. The D-185, like all of Case-it's binders, uses Kraft board instead of PE board to give its binders a firm, stiff shape that won't buckle or warp. The spine is specially designed so that your binder can lay flat when open, making it easier to add or take papers out, and to put notes in. Case-it produces quality binders offering unique organizational tools for school or home use.