Feature Highlights: 1. Invisible Ink Magic – Write secret messages that disappear instantly, then reveal them perfectly using the built-in UV light in the cap. 2. Kid-Safe & Washable – Made with harmless, tasteless ink that’s permanent yet easily washes off skin, fabric, paper, and most surfaces. 3. Smooth & Colorful Writing – Glides effortlessly and leaves bright disappearing marks, perfect for fun on t-shirts, paper, skin, and more. 4. 14-Piece Party Ready Set – Everything you need to host spy games, treasure hunts, escape rooms, or classroom activities—great for party favors and gift bags. 5. Endless Spy Fun – Kids love playing detective, sharing secrets, and creating surprise messages for birthdays, holidays, or everyday adventures. Product Details: This invisible ink pen set includes 14 magic markers, each with a built-in UV light to reveal hidden messages. Batteries come pre-installed and ready for use. The ink is smooth, vibrant, and completely safe—washable from skin and clothes, yet long-lasting on paper. Perfect for creative play, spy-themed parties, classroom projects, or surprise gifts. Easy for kids to use and designed to spark imagination and interactive fun. Specifications: - Set includes: 14 invisible ink pens with built-in UV lights - Ink type: Disappearing, washable, non-toxic - Power: Batteries included and pre-installed - Recommended age: 3 years and up (adult supervision advised for small parts) - Use on: Paper, skin, fabric, and most smooth surfaces