Magical Handwriting Workbooks Handwriting Practice Copybook, Handwriting Aid Mag
【Magic Ink】:The matching refill uses magic ink, it can automatically fade in 30 minutes after writing, so the copybook can be used repeatedly. 【5 In 1 Copybook Set】:Inclued Enghlish letter,Addition and Subtraction,Interesting Drawing,Number 1-100,Multiplication and Division.