4" Binder Capacity - Letter - 8 1/2" x 11" Sheet Size - 700 Sheet Capacity - D-Ring Fastener(s) - Inside Front & Back Pocket(s) - Polypropylene - Black - Recycled - Space Saving, Antimicrobial, Open and Closed Triggers, Gap-free Ring, Locking Ring, Heavy Duty, Ink-transfer Resistant, Clear Overlay, Hinged, Non-stick, Long Lasting - 1 EachHeavy-duty binder features a single-touch, gap-free rings to easily open, close and load paper. Locking D-rings keep your documents securely contained during storage or travel. Quickfit overlay allows you to use a single sheet of paper to create a custom insert that wraps around the spine to the front cover for easy insertion and quick identification. Double-hinged cover takes up less space on a shelf for space-saving storage. Ink transfer-resistant overlay and interior front and back cover pockets resist sticking to inks to maintain clean appearance. Antimicrobial polypropylene material helps inhibit the growth of bacteria for long-lasting use.