the Cover is Made of Pu, Which is Sturdy, Durable & Reliable, Simple & Delicate. Each Spiral Notebooks Will Come to You with a Pen in Holder, Sticky Notes & Flags, with Lined, Double Sided Paper & Pen Holder Elastic Loop, Convenient to Write & No Need to Look Around for a Pen or Pencil. These Notebooks Can be Applied in Traveling, Business Trip, Meeting, Class Notes, Diary & So On, Suitable for Business People, Students, Teachers, Reporters & Most Occupations.