[3 Inch D-ring Detachable Binder] zipper binder bag comes with a removable 3 inch D-ring board that holds 700+ sheets of A4 paper. The convenient zippered pocket could storage pens, calculators, various measurements and other school supplies. [Accordion File Organizer Pocket] The zip up binder case for school is equipped with 13 pockets expanding file folders with labels for convenient classification. [Bottle Pocket& Name Tag] The side pocket of zipper binder shoulder bag can secure your water bottle in place with fixable strap, which is easy to access. [Fit for 13 Inch Laptop Storage] 3 inch D ring zip up binder is made of high-quality thickened 900D oxford fabric, which is tear-resistant and waterproof. The 3 ring binder bag with shoulder strap measures 13.19x12.60x4.34 inch, with laptop compartments that provides excellent protection for your laptop and tablet PC. [Convenient to Carry] The school binders with zipper comes with PU leather handles with a button, a removable shoulder strap with air-permeable pad. You can easily carry on or as a shoulder bag. This zipper binder 3 ring case is suitable for elementary, middle, high school students, college, teacher, office and commuters. Color:Black Material:Oxford cloth Package Contents: 1 * Zipper Binder(without paper jam)