This amazing invisible ink pen uses a special harmless and odorless ink that is perfect for kids. All ink is invisible, and when the UV LED light is shone on the paper, the magical messages are revealed. Perfect for spy games and imaginative play, this spy pen will provide tons of fun for your child. The ink is permanent, washable, and suitable for use on paper, cloth, walls, and even skin! It makes the perfect birthday or Christmas gift for kids who love to engage in creative and imaginative play. Description: Introducing the highlighter pen, a must-have for kids who love to explore their creativity and have fun with secret messages! This amazing invisible ink pen uses a special harmless and odorless ink that is perfect for kids. All ink is invisible, and when the UV LED light is shone on the paper, the magical messages are revealed. Perfect for spy games and imaginative play, this spy pen will provide tons of fun for your child. The ink is permanent, washable, and suitable for use on paper, cloth, walls, and even skin! It makes the perfect birthday or Christmas gift for kids who love to engage in creative and imaginative play. Get the highlighter pen today and boost your child's creativity and fun! Item Name: Highlighter Pen Material: Plastic Power Supply: 3 x Button Batteries(Included) Features: with UV Light, Creative Writing, Fun Secret Message Marker Size Details: Length: 13.2cm(Approx.) Notes: You will find more amazing products if you visit our store. Due to differences in lighting and screen settings, the color of the project may be slightly different from the picture. Due to different manual measurements,allow for slight size differences. Package Includes: 2 x Highlighter Pen