Esselte Ring Binders provide an elegant and practical solution for storing Protocol format sheets at home and in the office. The durable 2mm cardboard frame is coated with brilliant embossed paper, plus the binder features a case with reinforced metal bands that make it sturdy and long lasting. The N.1 mechanism, tested 10,000 times and guaranteed for 3 years, provides a lever operation that makes the rings open and closed easily when inserting the sheets, while the large white section on the back allows you to write useful information to identify the contents of the binder. With a capacity of 500 sheets of 80 g/m², you will have enough room to store your sheets and keep your workspace tidy with a touch of yellow color. FSC Mix Certified Product