1. Ready to use: Supports the storage of A3 format documents and drawing boards, allowing both A3 and A4 sizes to be easily accommodated, including cards and publications, with a 2 layer storage design to ensure tidy organization. 2. MULTIPURPOSE: The internal structure of this document bag is designed for organization. It features mesh pockets for cups, a zippered main compartment for A3 files, and a front pocket for convenient storage of notebooks, pens, and tickets. Additionally, the mesh side pockets provide space for water bottles or umbrellas. 3. EASY TO CARRY: This document bag keeps your papers and artwork organized and secure. for students, teachers, and artists, it is collapsible for convenient storage and easy to carry by hand or over the shoulder. 4. WELL MADE: The lining material of this document bag is carefully selected to protect documents from wear and tear. The exterior is made of quality Oxford fabric, offering durability and waterproof performance. The double stitched hand strap with nylon edging provides extra stability, ensuring long lasting protection for your important papers.