Specifications Name: Magic Training Calligraphy Training Size: Big Ben 13.3cm x 18cm/5.24 in x 7.09 in Small notebook 25cm x 18cm/5.24 in x 7.09 in Describe Material: White cardboard Function: Children's handwriting exercise book, reusable groove handwriting book High quality: The children's magic copy book adopts a three-dimensional groove design and standardized writing format; Magic calligraphy paper is thick, sturdy, and stain resistant. The pen holder is made of silicone, 100% safe, providing children with a comfortable and effective writing experience. Recyclable design: This is an essential magic book for children to learn calligraphy. The children's magic copy book uses disappearing ink, which disappears after 10 minutes and is very suitable for repeated practice. For parents, groove style writing exercise books are a practical and economical choice The perfect gift for children: The reusable calligraphy calligraphy calligraphy set is the perfect gift for your 3-8-year-old child. Product list A: Large size+5 pens/10 pens B: Small size+5 pens/10 pens