The Magic Reusable Copybook for Kids is a practical and innovative writing tool designed for preschoolers aged 3-5 years old. The set includes a number tracing book and a pen that allows children to practice writing and develop their hand-eye coordination skills. This copybook uses magic calligraphy technology that allows the ink to disappear after a few minutes, making it reusable and environmentally friendly. The calligraphy style used in the book is simple and easy to understand, making it perfect for young children who are just starting to learn how to write. The book is designed with large letters and numbers, making it easy for children to trace and practice their writing. By using this copybook, children can improve their handwriting skills and develop their creativity and imagination.