1. Material: This accordion-style folder is made of durable and environmentally friendly polypropylene (PP) materials and Oxford cloth. It is waterproof, has relatively high strength, and is not easily cracked or deformed. 2. Compartments: It has 13 independent pockets, suitable for storing A4 and letter-sized documents. Each pocket can be expanded to 1 1/8 inches, which is sufficient to store important documents safely without binding them together. Meanwhile, it is small enough to fit into a backpack and can be a good helper for your office life. 3. Closure design: This expandable folder features a zipper design, which helps keep the internal documents more secure. Even small cards are less likely to fall out, making it safe and convenient to carry. 4. Usage: It can keep your vacation documents, vouchers, cards, and coupons organized. It is a suitable document organizer for home, office, school, and travel use, being both simple and stylish. It is also suitable for storing commonly used small items such as cards, pens, rulers, highlighters, and keys. 5. After-sales service: We are committed to providing customers with satisfactory service. If you are not satisfied with our document storage bag, please contact us immediately via email, and we will try to provide you with a satisfactory solution.