Listings show folders made from plastic or poly (poly plastic) and some presentation folders made from 100 lb cardstock.
Yes. Options include 3-hole punches for binder use, prong fasteners/clasps, and styles without fasteners (non-pronged).
Most options are sold in packs of three, with some listings offering six-pack options.
Most listings state they comfortably hold standard 8.5 × 11 inch (letter-size) documents.
Some presentation folders are described as having a smooth, classic glossy finish and are made from 100 lb glossy cardstock for a polished appearance.