The Art Profolio Multi-Ring Refillable Binder features a sleek, contemporary exterior design with durable, matte black precision steel binder rings. Made from a unique and proprietary process, the polypropylene cover is rigid to protect the contents, yet lightweight for easy transport to your important presentations. A unique, center mounted, multi-fold spine allows the Art Profolio Multi-Ring Refillable Binder to lay perfectly flat for presentations. Designed for use with Itoya's exclusive PolyGlass Pages refill sheets, featuring crystal clear clarity and glass smooth texture. Includes one pack plus bonus sheet. Archival safe and acid-free.