Envelope Folders feature a button closure designed to keep materials inside secure and organized. Easily pulls apart, while firmly securing flap. Perfect to organize your important papers, memos, projects, presentations, photos, letters, and forms at home, the office, school, or on the go with these useful envelope folders. Convenient Large Storage Bags Space, Able To Store All Documents, Files, Makeup, And Other Learning Material, Office Supplies And Cosmetics Pouch Bag. Made from Durable Quality Environmental Polypropylene Plastic, which is Completely Water Proof to keep your important documents safe. Best size to fit all your document organizing needs.