This Heavy-Duty View Binder with One Touch rings is perfect for extended use. From everyday referencing to classroom notes and home business use-this binder's strong enough to handle them all. The DuraHinge(R) design is stronger, lasts longer and resists tearing, while the DuraEdge(R) feature makes the sides and top more pliable to resist splitting. Each binder is fully adhered with a deep-weave polypropylene cover that is resistant to bubbling, surface wrinkles, and is tear-resistant.This Heavy-Duty View Binder with One Touch rings is perfect for extended use. From everyday referencing to classroom notes and home business use-this binder's strong enough to handle them all. The DuraHinge(R) design is stronger, lasts longer and resists tearing, while the DuraEdge(R) feature makes the sides and top more pliable to resist splitting. Each binder is fully adhered with a deep-weave polypropylene cover that is resistant to bubbling, surface wrinkles, and is tear-resistant.