AASTHA IMAGINE Magic Practice book 4 Book 10 Refill &Pen,Grip Number Book for Preschoolers  (Multicolor)

Ink The pen with special ink will gradually fade within 30 minutes after writing, and the books are reusable. Groove The books are designed with special grooves which can lead your handwriting correct and beautiful! Paper The paper are thick and durable. Children may take it with them anywhere and paint as they like. Grips This set contains a pen and a grip with random color. It not only helps correct writing grip posture but also makes the writing more funny.