The OEM Cardinal Poly Ring Binder Pocket is designed for durability and performance, featuring extra-tough poly pockets that outperform regular paper pockets. Each letter-size pocket is double-sided and holds up to 20 sheets in each of its two pockets. The multicolored design allows for easy reference, while the translucent pages are made from transfer-safe poly to prevent damage to photos and ink transfer. This PVC-free material ensures that it will not stick to any materials inside the binder.