1.【Well Constructed】 Made of hard colored plastic . Waterproof & sturdy enough to keep papers safe. 2.【 Expansion 】Product size: Capacious expanding file folder can holdsheets of A4/ Letter size paper. It is large enough to keep your important documents securely without getting all bunched up but also compact enough to carry in a backpack. 3.【Ideal On the Go Organizing 】 Nicely storage receipts, taxes, personal papers, project, puzzle, photos and important documents. 4.【 Flap with Elastic Band & Button Closure 】 Full Size Flap with elastic cord & button closure provides extra security for your important files and documents. 5. It works good for long-term storage and keeping things organized. Wonderful for any office, school and home. 1.【Well Constructed】 Made of hard colored plastic . Waterproof & sturdy enough to keep papers safe. 2.【 Expansion 】Product size: Capacious expanding file folder can holdsheets of A4/ Letter size paper. It is large enough to keep your important documents securely without getting all bunched up but also compact enough to carry in a backpack. 3.【Ideal On the Go Organizing 】 Nicely storage receipts, taxes, personal papers, project, puzzle, photos and important documents. It works good for long-term storage and keeping things organized. Wonderful for any office, school and home. 4.【 Flap with Elastic Band & Button Closure 】 Full Size Flap with elastic cord & button closure provides extra security for your important files and documents.