Application: Invisible Ink Pen Is Suitable For T-shirts, Paper. We Use Invisible Pens In Family Activities, School Activities, Parties.
Package: 10 Pens, Reusable Invisible Pens With Built-in Lights Have 10 Different Colors, But The Ink Is The Same Color.
Health And Safety: Harmless And Flavorless Ink Is Permanent But Washable, A Better Gift For Children. Children Will Like Invisible Ink Pens.
Family Time: Children Could Use A Spy Pen To Write Secret Messages And Play Detective Games With Their Parents, Spend Happy Family Time Together.
