Multi-ring binder features a sleek exterior design with durable and 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 of your important presentations A unique, center-mounted, multifold spine allows the binder to lie perfectly flat for presentations Binder includes one pack plus bonus sheet with crystal-clear clarity and glass-smooth texture Binder is refillable Design is archival-safe and acid-free Material: Steel Ring; Polypropylene Cover Sheet Capacity: 40