the product is good for 3 year old or more. the magic pen has ink which vanishes after some time so the books can be used several times. there are several refills too.
Magic Groove Practice Copybook(4 Book + 10 Refill) Copybook
English Version Children's Groove Practice Copybook Pen - Temu
TSV Magic Practice Copybook for Kids, Magic Reusable Practice
【Magic Practice Copy Book】The matching refill uses magic ink, it can automatically decoloration in 30 minutes after writing, so the copybook can be
UN UNITEDTIME Grooved Handwriting Book Practice, Magic Practice Copybook for Kids, Reusable Handwriting Practice Book for Kids, Calligraphy Copybook
2023 4-IN-1 Magic CopyBook – Zenitaz
Magical Grooves – Magic Groove
4 Pc Groove Learning Books for Kids,Magic Practice
【Magic Copybook Set】You will receive 4 English handwriting books (numbers + letters + math + drawing), 1 auto-fading pen, 5 refills and 1 pen holder
Zankie Xiaoxin Magic Practice Copybook for Kids, 4 Pack Reusable Calligraphy Set with Handwriting Pens for Beginners, Children Tracing Workbook for
Children's Magic Copybooks – The Groovd
5 Pc Grooved Handwriting Practice for Kids,Repeatedly Magic