Portfolio

An item of flexible or nonflexible material used for carrying papers, prints, or similar documents. The nonflexible material type is a booklike item, the covers bound together at one edge. The flexible material type may open on one, two, or three sides, and may be equipped with a ring binder, handles, and/or pockets. The item may be kept closed by tie strings, slide fasteners, or other devices to hold the item in a closed position. Excludes brief case and envelope, wallet.