HIGH QUALITY MATERIAL: A4 file folders are made of high quality eco-friendly water-resistant PVC material. The zipper makes your paper safe. It can be used as a lifting ring to hang the storage bag on the wall, easy to hang up and carry. Protect your files from moisture, keep them flat and clear. Smooth metal zipper, strong and durable. TRANSLUCENT MESH BAGS: The zipper file bags adopts translucent design, moderate transparency, prevent your privacy from being exposed. You can see the internal structure of the mesh pocket without opening it. durable, thickened mesh protects the item and bag from friction. PRODUCT SIZE: Document pouches come with 12 pieces, each pouch is 13.4" x 9.4"/34cm x 24cm. A4 sized briefcases can only hold A4 sized paper or smaller. Please confirm the product size before purchasing. It can help you organize your various items to suit your daily life and work. WIDE USAGE: Waterproof Duulousia zipper pouch specially designed to meet everyone's storage needs. They can facilitate office storage and help you organize documents and office supplies accurately and efficiently. Perfect for makeup artists, college students, elementary school students, office workers and classrooms. PORTABLE AND HANGING: The hinge of the zip mesh bag is stable and not easy to tear or damage. The cord on the zipper can be used for hanging. It is convenient and quick to use and easy to carry. Use Use the zippered pocket to store items and simply take them away with a slight lift.