Business Source Round-ring View Binder - 1" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 225 Sheet Capacity - Fastener(s): Round Ring - Pocket(s): 2, Internal - Chipboard, Polypropylene - Black - Non-glare, Sturdy, Exposed Rivet, Durable, Clear Overlay, Gap-free Ring, Wrinkle-free, Non Locking Mechanism - 12 / Carton Round-ring view binder offers crystal-clear, nonglare overlays to customize the covers and spine for your letter-size presentations. Back-mounted metal rings allow pages to lie flat. 1" capacity holds up to 225 letter-size sheets. Clear pockets on the inside covers offer extra document storage with a 30-sheet capacity for each pocket. Design also features a sturdy chipboard core and exposed rivets. Binder is made of polypropylene for durability and resilience.