Elastic: Folder with internal flaps for better document retention.
Litigation: Made from durable cardboard, slightly larger than standard A4 size, with an expandable spine to accommodate a large volume of documents. Closes with fabric ties, elastic band, or without closure.
Suspened: Suitable for document organization systems where the folders, instead of being stacked on top of each other, hang from special rails in drawers or special transport boxes.
Heavy Duty: Made of durable pressboard that withstands time and frequent use.