Material: UV Size: 13.4cm/5.28in / 5.23" Color: as shown 1. Multipurpose: This set of 7 UV light pens combines multiple functions in one, serving as a children's toy pen and a safety warning marker. 2. Invisible ink: The pen tip is specially designed to write with invisible ink, providing kids with a fun and mysterious writing experience. 3. Portable: With its small and lightweight design, it is convenient to carry with you, allowing you to write and mark anytime, anywhere. 4. Built-in UV light: Each pen has a built-in UV light that can illuminate your markings, making them easier to view. 5. Great gift: Not only practical, but also a beautiful gift to give to family and friends, bringing mystery and surprise to your loved ones. Package includes: 7 x UV Light Pen Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia