BeiDuoMei Portable File Bag A4 Waterproof Zipper Folder Can Put Water Cup Storage Bag(3 Layers Black)1. Material: oxford fabric 2. Waterproof oxford fabric, effective protection of documents, thickened lining cloth, waterproof and durable 3. Hardware zipper, smooth and not jammed, sticky design, sticky is more convenient to take and put 4. Comfortable handles, wider leather handles, flat stitching, no strangulation, double side mesh pocket design, can put water cups, umbrellas 5. Three layers of large capacity, practical and can be loaded, can be put