13 expanding pockets: This folder features 13 expanding compartments to hold A4-sized test papers, homework, receipts, or bills. It keeps documents neatly organized and easy to locate, making it ideal for teachers, students, and professionals who manage paperwork daily. Sturdy construction: Crafted from wear-resistant material with reinforced edges, this vertical file bag withstands daily classroom or office use. It is designed for sorting test sheets or travel documents without worry of rips or damage. Space-saving design: The vertical accordion layout saves desk or drawer space while providing quick access to documents. It can be stored upright on a desk or flat on a shelf, helping maximize space in home, school, or business environments. Multipurpose use: Whether you are a student, teacher, or office worker, this expanding file folder supports easy transport and quick filing during school days, meetings, or travel. It keeps papers safe, sorted, and instantly accessible. Use scenarios: - Classroom: A teacher pre-sorts test papers, homework, and worksheets into the 13 pockets for rapid retrieval during grading or return to students, with the folder kept upright on a desk for convenience. - Student: A student uses the folder to organize assignments, notes, and project receipts, enabling easy transport between classes and quick access when studying. - Office or travel: A professional carries client documents, travel itineraries, and meeting handouts, storing the folder upright on a shelf or flat in a drawer for organized, accessible paper management.