Binder has two sets of 1-1/2 Inch D-Rings for a total capacity of 3 inches of storage. The zipper closure ensures materials will be secured inside. There are two exterior protective pockets for documents. The back to back "Z" configuration gives you maximum storage. It is covered in ripstop material with a square pattern that traps punctures and prevents tearing. Easily transport with either the handle or the shoulder strap. Contents of binder sold separately.