Cardinal® Double-Pocket Poly Dividers are made tough to outperform paper index dividers. These durable dividers let you flip through sections without ripping at the rings. Archival-safe, non-stick poly won't damage photos or transfer ink from pages. Tabs leave ample room for writing. Paper inserts included. Dividers are 3-hole punched to fit 3-ring binders. Holds 25 sheets per pocket. Letter size. Five divider set.