Heavy-duty view binder features a PVC-free poly material that will not stick to cover inserts or materials stored inside. Material is archival-safe for all documents including photos and offers superior, cold-crack resistance to 5 degrees Fahrenheit. Nonglare clear overlay holds custom title sheets. Use free online templates to customize. Back-mounted, nonlocking, steel round rings with dual opening and closing triggers allow sheets to lie flat. 3" ring capacity accommodates approximately 625 sheets. Horizontal pockets on the inside front and back covers secure loose documents. Each pocket holds 40 sheets. Binder also offers exposed rivets and a sturdy chipboard core.