What you get: 3 pieces of black expanding file folders with 13 pockets, size: 33 x 23.9 x 3.6 cm, which can store letters, A4 paper, documents, invoices, contracts, and standard US paper. The document folder is easy to carry, you can put it in your backpack, briefcase, etc. Durable and Waterproof: These expanding file folders are made of high-quality polypropylene, strong and flexible, tear-resistant and super durable. Waterproof and moisture-proof material that can keep your important documents clean. Expandable Pockets with Tabs: The file folders have 13 individual expandable pockets to keep different documents organized in sections, comes with tab inserts so you can label each file and find it easily, helps you get everything. Secure Design: Our folder organizer has a flap with elastic cord closure, protects documents securely and neatly in place during transport, allows you to take your files wherever you go. Widely Used: Accordion folders are perfect for organizing bills, invoices, letters, A4 paper, and other documents. Perfect for school, office, home use or as a perfect gift for teachers, students, doctors, engineers, designers, researchers, salespeople, etc.