【Doubly Efficient Writing and Storage】Perfect for organizing administrative paperwork, the top layer is a smooth writing surface that can be used directly as a writing board, allowing for fluid and unobstructed writing anytime, anywhere. Featuring a strong clamping design, it securely holds all types of documents and prevents them from scattering. The bottom layer incorporates a large-capacity storage box, making paper organization simpler. 【Extra-Large Capacity】As a practical document storage box, it boasts an extra-large capacity to easily accommodate manuals, books, documents, and other items, fitting both vertically and horizontally. It can easily hold 270 sheets of A4 paper. Its compact size takes up minimal space and can be slipped directly into a backpack for transport. 【Unique Design】This versatile A4 document holder is equipped with a reinforced strap, allowing it to be hung for storage or carried by hand. The side snap closures securely fasten to prevent documents from accidentally falling out; the integrated pen holder neatly stores writing instruments, providing easy access. The edged metal clip is carefully designed to prevent pinching hands during use, combining safety and practicality. Made of thickened ABS material, this durable file organizer is sturdy, resistant to deformation, and built to last. The edges are precisely finished, smooth, and scratch-free, preventing cuts during daily use and protecting yourself and your family. Its superior quality ensures resistance to frequent use, whether in a study or work environment.