1. UNIQUE DESIGN The expandable file folder is more advanced than other conventional document cases. Our rainbow file folder features 13 individual pockets with covers and a sufficiently long cord with a flexible elastic closure for safer storage. With the humanized pen holder design, you no longer need to worry about papers or pens getting lost. Two transparent business card slots are displayed on the front. 2. STURDY AND WATERPROOF MATERIAL Our accordion folder is made of quality polypropylene (PP) material (nontoxic and nonradioactive), resistant to breaking and deformation. It is durable and 100% waterproof. 3. SECURE FLAP AND CORD CLOSURE The fullsize flexible flap and cord closure of the folder provide added protection. To access stored items, simply flip back the flap. When finished, fold the flap back over the of the folder and secure it with the cord closure. 4. EXPANDABLE AND LARGE CAPACITY Expandable individual pockets in 13 colors for reliable organization of A4/Lettersized papers. The expandable bottom provides extra capacity.