They’re made from plastic/poly (durable, tear-resistant), laminated paper (high-gloss/laminate finishes), and medium-weight 100 lb cardstock.
Most are sized to hold 8.5 x 11 in paper. Many options also include 3-hole punches so the folder can be placed in a standard 3-ring binder.
Available fastener types include non-pronged styles (no fastener), pronged/binder fastener options, and some plastic folders with internal clasp closures.
Many two-pocket folders include built-in business card slots (on the left or right pocket) and the standard two internal pockets for organizing documents.
Sheet capacity varies by style; example capacities shown include about 50 sheets, 100 sheets, and up to 150 sheets.