Duraflex Notebook provides a great management tool executed with professional durability to fit the most budget-conscious individual. The flexible, textured poly cover protects the white ruled paper with a margin. Date area at the top of each page lets you track your planning and notes. Twin-wire binding allows the pages to turn smoothly and lie flat. Sheets are acid-free to prevent paper from changing color over time. The paper is made with a high percentage of post-consumer material to help preserve the environment by cutting down fewer trees. Vegetable oil-based ink means less impact on the environment.