Poly pockets feature extra-tough dividers that outperform paper pockets for binders. They will not gray or tear out rings. Translucent divider pages are made from transfer-safe poly so they will not damage photos or transfer ink or toner. Design offers a pocket on both front & back of each divider. Five double-sided pockets (10 pockets in all) have insertable tabs & include inserts. Each pocket holds 20 letter-size sheets & is three-hole punched to fit in three-ring binders. Pockets are archival-safe for all documents & photos.