Stable Material Waterproof - Our accordion sorter made of high quality polypropylene (PP) plastic material (non-toxic and non-radioactive), not easy to break and deform. It is very stable and 100% waterproof. Also comes with 3 PVC Zip Document Folder A4, easy to carry documents when you go out Expandable Large Capacity - 24 color expandable individual pockets for reliable partitioning of A4 size paper which can hold about 3 000 sheets. Each pocket offers a considerable amount of space, up to 10 inches. Its expandable bottom adds capacity Secure Flap Drawstring Closure - The flexible flap and drawstring closure of the backrest provide added security. To access stored items, simply fold down the flap, When finished, put the flap back on top of the backrest and secure it in place using the drawstring closure Unique Design - Accordion binder is more advanced than other traditional briefcases. Our rainbow file organizer is made up of 24 individual pockets with lid and enough long and elastic drawstring for safer storage. In addition to the humanized design of the pen holder, never worry about losing papers or pens, 2 transparent business card slots displayed on the cover page Multi-use; Time Saving - Pockets feature a pull tab to allow for the addition of handwritten labels, allowing each section to be identified instantly for quick access. Keep your holiday documents, vouchers, cards and coupons, etc. tidy and organized, an ideal document organizer for home, office, school and on the go, simple and fashion