About this item

• Packaged nicely and individually: 10 individually wrapped (zip lock bag) sets. Each set contains a notebook and a secret pen(Battery included and installed) and a mustache(can be pasted).
• Send invisible messages: each with invisible ink one end and a UV light the other end. Text is invisible, and then make them visible again when you light up the messages with UV light.
• Super hit item for the goody bag: Kids are enjoying writing secret messages for each other, and detective espionage games with these secret pens. Great for party bags/prizes, detective adventure party bags, school leaving gifts, class gift, add to school's prize box.
• Harmless and tasteless ink, healthy toy for your kids! You can write anywhere: T-shirts, paper, skin. Permanent but washable. (Please do not use on a special surface, such as: glass or smooth plastic film, etc.) invisible ink is the same in every color pen.
• 100% Guarantee: If there is a problem with the secret pen, please contact us via Amazon email, we offer a 100% refund or exchange guarantee, thanks.