Provides a classic pen and paper experience, yet is built for the digital age. Although it feels like a traditional notebook, the Rocketbook Core is endlessly reusable and connected to all of your favorite Cloud services. When you write using any pen from the Pilot® Frixion line, your writing sticks to Rocketbook Core pages like regular paper. But add a drop of water and the notebook erases like magic.Package Includes: (1) Microfiber Cloth; (1) Pilot® FriXion Ball® Erasable Black-Ink Gel Pen