What's Included Letter Book × 1; Math Book x 1 Pens × 1; Ink refills x 5; Grip x 1(which can help correct writing grip posture) Reusable & durable The ink and papers are made with special environmental material. After writing the handwriting will automatically fades out in 30 minutes, thus the copybook can be used repeatedly and always kept new. Bigger Size To help children write easily and comfortably, our magic copybooks are designed with enlarged size of 11 X 8 inches Deeper Grooves The copybooks have deep grooves to help kids practice handwriting. Not easy to get out of the line Richer content Embedded with various animal patterns and interesting math questions, so that children can be more interested in learning. From the Manufacturer We believe that education is incredibly important, and we’re thankful for the opportunity to serve so many inspiring teachers and parents. Our goal is to support the work they do by providing tools that make their jobs a little easier. From language, math, art, to puzzles and games, we try to provide a launch pad to inspire open-ended thinking, encourage children to engage new experiences, and offer thousands of ways to play.