Descriptions: This book Can be written repeatedly. It's good for kids to practice writing, drawing, math, etc. The writing will disappear automatically in a few minutes if you write with our pen. Purpose: Calligraphy Practice Material: white cardboard Color: random color Width: 13.5CM Length: 19.5CM Format: English letters, numbers 0-100, plus and minus version, interesting drawing Suitable for ink: Auto fade refill Format: English letters, numbers 0-100, plus and minus version, interesting drawing Suitable for ink: Auto fade refill Features: Nice design: this training copybook adopts a three-dimensional groove design, which can standardize the standard writing format. Reuse: After 10 minutes, the text will fade out automatically and can be applied many times, it is equivalent to having innumerable copies of magic practice calligraphy. Full of fun: graphic combination, vivid color, enhance memory, increase children's interest. Quality material: made of quality material, durable, and comfortable to write. Package included: 1*Magic Writing Paste 1*Pen Holder 8*Specific Refills 1*Pen Cover