Most two-pocket poly folders are made from polypropylene, a durable plastic. Some listings note additional paper components for reinforcement and metal prongs or fasteners in styles that include binder hardware.
Options include folders with built-in metal prongs/fasteners, non-pronged standalone folders, and versions that are 3-hole punched so they can be placed inside a standard binder.
You’ll find single-folder packs as well as multi-packs; examples in listings show package quantities such as 1, 12, and 36.
Many two-pocket poly folders are described as water-resistant and tear-resistant thanks to durable, heavy-duty polypropylene construction; some listings explicitly call materials waterproof to help protect contents.
Most folders are sized to hold standard 8.5" x 11" letter paper; several descriptions explicitly state compatibility with letter-size documents.