Reusable and erasable: This spiral notebook can be erased and reused about 500 times. Any erasable pen will do. You can use a pen eraser or a blower (above 140F) to clean your writing.^Sufficient space: 8.7 x 11.2 inches provides enough space for scheduling, design and sketching.^Anti-tearing material: stone paper to prevent accidental damage. Turn the pages without worrying about tearing near the spine of the book. We are designed for those who wish to use an infinitely reusable laptop for years or even life. The page is made of synthetic material, which provides an extremely smooth writing experience.^Share ideas online: Download CamScanner or Newyes Note (scanner app) and save your good ideas to the cloud, such as Google Drive, Dropbox, Evernote, Box, OneNote, iCloud and email.^Reminder: Please wait for about 15 seconds to make sure the ink is dry. Please do not expose the notebook to high temperature above 140F, the ink may disappear.