YADIRF 10-Pack Colorful Invisible Ink Pens with UV Light - Magic Spy Writing Set for Kids, Boys & Girls - Perfect for Secret Messages, Birthday Party Favors, Halloween Gifts & Classroom Activities

Features:This invisible ink pen is made of durable material that is washable and good for children's health. It uses a safe and odorless ink that can only be seen under UV light.Size:13.5*1.8cm/5.31*0.7 inch..The invisible ink pen is small and light, so you can easily carry it with you wherever you go. It fits in your bag or pocket without taking up much space. You can write secret messages anytime, anywhere with this pen.When the writing is done, the ink will be invisible unless you turn on the light on the bottle cap to perfectly see the secret message.Kids will love these spy pens. Kids love using this kind of pen to keep their confidential and plays detective spy games. Invisible pen brings you an amazing variety of fun activities. From Surprise birthday parties, to revealing a top confidential message to their parents or grandparents.Suitable for children's birthday gifts, holiday gifts, children will be very happy.Package Includes:10pcs Colorful Invisible Ink Pen Magical Ink Pen With UV Light

Harmless and tasteless ink, healthy toy for your kids! Smooth and colorful disappearing inks on T-shirts, paper, skin and any surface!

Size13.5*1.8cm/5.31*0.7 inch..Made from quality plastic materials, this pen is durable and long-lasting, ensuring that you can enjoy it for years to come.

Each spy pen has builted-in UV light on the pen cap. After writing with invisible ink pen, only turn the blacklight on to reveal hidden messages.

This amazing uv light pen allows you to write your secret message and hide it. Also our invisible ink pen set is perfect for making exciting spy games, you can play spy games with your family and spend happy family time.

This invisible Spy Pen can write your secret in the sticky note.Parents can buy it for their kids party at home. Kids love using this kind of pen to keep their secret and play detective spy games.