• Write Your Secret Messages: Write your secret message with these magic pens for kids! Light up the built-in UV light on the pen’s cover to reveal the invisible ink - the secret message. Note: The pen shell colors are black, blue, green, yellow, purple and red, but the ink is transparent
• Safe and Non-Toxic: The invisible ink pen is non-toxic, harmless and tasteless, which is safe for your kids! Smooth and disappearing inks on t-shirts, paper, skin and any surface. Permanent but washable. Note: Children under 3 years are encouraged to use it under the supervision of parents
• Great Choice for Fun Party Favors: This uv spy pen comes in a pack of 30, which is perfect for surprise party favor bags for kids! Tops up the happiness during Christmas, Birthday and Halloween parties
• Ready-to-Use Package: The package includes 30 uv pen per color with built-in UV lights. Use it anytime after you receive it
• Fun and Creative: Invisible pens provide a fun and engaging activity for all ages, offering a unique and imaginative way to share secret messages with friends and family, fostering stronger bonds