Sank Magic Practice Copybook, Number Tracing Book for Preschoolers with Pen, Magic Calligraphy Copybook Set Practical Reusable Writing Tool Simple Hand Lettering (4 BOOK + 10 REFILL+ 1 Pen +1 Grip) We are passionate about creating cute and magic copybook for kids!The magic practice copybook will automatically fade and can be reused.Handwriting automatically disappear after dry, great for repeatedly practice. If you want your children to learn calligraphy, writing, painting, mathematics, English. A reusable magic copybook set is a good choice. This is a great gift for kids.