High-quality material: The accordion file folder is made of ultra-durable and environmentally friendly PP material and Oxford cloth, waterproof and sturdy, not easy to break and deform. Product Dimensions: 13.810.61.4 . 13 individual pockets, fits A4 size and Letter size, each pocket expands up to 1 1/8 inches, big enough to store all your important documents safely, no need to bundle all your documents in Together, it's also compact enough to fit in a backpack. It is a good helper for your office life. Close the zipper: This extension folder adopts a zipper design, which can make the files inside more secure. Even small cards will not fall off, safe and convenient to carry. MULTI-PURPOSE: Keep your vacation documents, vouchers, cards and coupons organized. It is the perfect file organizer for home, office, school use and travel, simple and stylish. Great for collecting cards, pens, rulers, highlighters, keys, and other frequently used small items.