This Heavy-Duty Binder with One Touch rings is perfect for extended use. From everyday referencing to classroom notes & home business use, this binder's strong enough to handle them all. DuraHinge design is stronger, lasts longer & resists tearing. The DuraEdge feature makes the sides & top more pliable to resist splitting. Deep-texture film offers a smoother finish & features a linen pattern for high-quality look & feel. Simply pull the lever to open the rings for adding, replacing & removing pages. Then push to lock the rings in place. Even when filled to its 400-page capacity, this binder still has four stacked pockets for a bit of extra space inside.