Lasts all year. Guaranteed! Durable, water-resistant poly covers protect your notes all year. Reinforced, tear-resistant divider pockets keep your loose sheets together. Spiral Lock wire binding prevents coil snag, and high-quality paper provides excellent ink-bleed resistance. Easily inserts into any three-ring binder (sold separately). Pocket-Sized Indicator: N; Book-Binding Type: Spiral Coil; Book-Binding Details: Spiral lock; Book-Binding Edge: Side.