Fangrui Product Details STABLE WATERPROOF MATERIAL - Our accordion folder made from high quality polypropylene (PP) material ( and nonradioactive), Not easy to break and deformation. Its very stable and 100% waterproof. SECURE FLAP CORD CLOSURE - The folders full-size flexible flap and cord closure provide added security. To access stored items, simply fold back the flap. When finished, return the flap up and over the top of the folder and secure it in place using the cord closure. EXPANDABLE LARGE CAPACITY - Expandable 13 colors individual pockets for reliable partitioning for A4 size/letter size paper. Its expandable bottom adds additional capacity. DESIGN - Expanding file organizer is advanced than other traditional briefcase.Our rainbow file organizer is 13 individual pockets with cover, and enough long cord flexible elastic closer for storage, besides humanized pen holder design, never worry about papers or pens lost, 2 transparent name card slots displayed on the front page. MULTI-USE TIME SAVING - The pockets are ta