Material: Our stretch file folder is made of high quality PP material, which is waterproof and moisture-proof. Not easy to break and deform. Suitable Size: The expandable file folder is 12.8*9.6inch/32.5*24.5cm, suitable for files of A4. Each folder has 5 pockets, can easily subdivide the folder, and can hold a large amount of paper. Snap Button Closure: This folder organizer is designed with a secure snap button to hold items stored firmly in place during transportation. Organizing Tool with Labels: The expandable file folder is very suitable for your daily organization needs, and the labels can be used to easily find your files to remember what's filed and where, and keep everything neatly sorted into sections. Wide Application: This folder set is perfect for home, office, school and can be used as a personal gift or keepsake for staff on a birthday. Besides, it is also the best choice for keeping notes, projects, documents, business expenses and tax documents.