The Case-it King Size Backpack Binder can hold it all! This zippered binder has extra-large 4-inch D-rings and a 5-subject file folder for all your organizational needs. The interior expanding file folder allows you to organize and protect all of your documents. The binder has azipper opening on the gusset that allows you to access the folder without opening the whole binder. On the inside there’s a large zippered pocket that is perfect for storing pens, pencils, and any other classroom essentials. It even comes with a handle and a shoulder strap that converts into a backpack so you can easily take it around wherever you need. The spine is specially designed so that your binder can lay flat when open, making it easier to add or take papers out, and to put notes in.