Avery® Durable Binder

3" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 635 Sheet Capacity - 3 Ring(s) - Fastener(s): Slant Ring - Pocket(s): 2 - Polypropylene - Recycled - Pocket, Durable, Long Lasting, Tear Resistant, Split Resistant, Sturdy - 1 Each. DuraHinge design that's stronger, lasts longer and resists tearing. DuraEdge makes the sides and top more pliable to resist splitting.