Cardinal Zippered Binder Pockets, 10 x 12 Inches, Clear (14201) (6 Per Pack) Convenient zipper binder pocket comes with three-hole punched construction, so it easily fits into any standard binder. Archival-safe materials that will not lift or transfer inks or toners keep and protect your unpunched documents or photos. Pocket expands to 1/2" to hold up to 100 sheets of paper, notes or other accessories. Heavy-duty polypropylene for added durability.