Perfect size: 4 A5 size (5.7" x 8.3") ruled notebooks are included in the package. 80 sheets/160 pages per pack. Suitable size for handbags, school bags or backpacks^ Double helix loop design-well-made, sturdy and durable double helix loop buckle coil, to ensure the page connection is firm. After opening, it also provides you with a flat and firm writing surface. Elastic closure strap helps to keep the diary securely closed when carrying^ High-quality thick paper-The paper in the journal is thick and high-quality to avoid ink feathering and leakage. No bleaching and no acid, white paper can effectively protect your eyesight.^ Waterproof cover-The professional and durable cover notebook diary can protect your diary for many years, and can be easily laid flat for comfortable writing and reading.^ Suitable for different occasions-this notebook is the perfect choice for you to use in school, home, office or more places. This is also the perfect gift for friends, colleagues or classmates