The Case-it King Sized Zip Tab Zipper Binder can hold it all! This zipper binder has extra-large 4-inch D-rings that hold up to 800 sheets of paper. Included in this binder is a 5-subject file folder for all your organizational needs. The interior expanding file folder allows you to protect and organize all of your documents. Need quick access tot he file folder? The gusset has a zipper that allows you to access the folder without opening the whole binder.