The RocketBook Letter Flip Notebook Set is designed for every classroom, office, and brainstorming session. It includes 36 pages of white lined, college ruled, dotted paper made from synthetic polypropylene materials and allows you to write smoothly using the included Pilot Frixion pen. When you’re done writing, the RocketBook Notebook magically wipes clean with a damp cloth to reuse again and again! Use the RocketBook app to back up your notes, plans, lists, and big ideas to your favorite cloud storage service. Then, erase and reuse your Flip Notebook for your next adventure! Key Features Material: Polypropylene Dimensions: 11.12” H x 8.50” W x 0.25” D Reusable design wipes clean with a damp cloth Comes with an app that lets you upload and store your notes Compatible with the included Pilot Frixion Pen Great for note-taking, brainstorming, and more