2-layer storage design supports A3-sized documents and drawing boards, helping to store and organize documents and materials in A3 size so everything stays tidy and accessible. It also accommodates A3 and A4 sizes, documents, cards, messages, and publications. Internal layout includes mesh pockets on both sides, a zippered compartment for A3-sized documents and drawings, and a front pocket for notebooks, pens, and tickets. The mesh pockets store water bottles securely. This document bag is easy to carry: suitable for students, teachers, and art lovers; folds flat for storage and can be transported by hand or over the shoulder. Its versatile carrying options make it convenient to transport and organize must-have documents, artworks, and more. Durable and protective: featuring a double nylon-hand strap and a sturdy Oxford fabric with lining material to withstand wear. The high-quality outer material is waterproof and robust to provide added protection for your important documents.