MaleDen Invisible Ink Pen, Upgraded Spy Pen Invisible Ink Pen with UV Light Magic Marker for Secret Message and Kids Halloween Goodies Bags Toy (6pcs)

These were a huge hit in Christmas goody bags for kids ages 5-10 yrs. The pens worked well and they were a great price! The kids had so much fun with them and did all kinds of notes and designs for each other. They worked during class and none of them complained about dried ink, so that’s a win! Great design, durable product, hours of fun!

The pen set has brought a whole new level of fun and excitement to our family's games and activities. With six pens in the pack, my kids and I have been enjoying endless hours of spy-themed adventures and mystery-solving missions.The invisible ink feature is absolutely fascinating! The pens write smoothly and cleanly on paper, but the real magic happens when we use the built-in UV light to reveal our hidden messages. Watching our secret notes magically appear under the UV light never fails to amaze us, and it's like stepping into a spy movie.My kids have had a blast using these pens to create treasure hunt clues, leaving surprise messages for each other, and even creating their secret code language. It's been a fantastic way to keep them engaged and entertained, especially during playdates and rainy days indoors.The pens are compact and lightweight, making them easy for little hands to hold. The caps fit snugly, preventing any accidental ink leakage, and the pens are sturdy enough to withstand a bit of rough handling from kids.The invisible ink pens have been a big hit during Halloween as well. We used them to create mysterious goodie bag notes for our trick-or-treaters, and the kids absolutely loved receiving a special secret message along with their treats.One thing to note is that the invisible ink works best on plain white paper or light-colored surfaces. When used on dark or heavily textured paper, the writing may not be as clear or visible under the UV light.Overall, the invisible Ink Pen set has been a fantastic addition to our collection of creative tools and toys. The thrill of writing and revealing secret messages has sparked our imaginations and added an element of surprise to our everyday activities. Whether you're planning a spy-themed party, looking for a unique gift, or simply want to add some magic to your family's fun, these invisible ink pens are an excellent choice!

For all of the kids that love to draw and write, these are the coolest! My kids like to take the light up part off and use them for flashlights as well. Multi-functional! :)

I remember getting these as a kid. They were so fun to use and write with. I decided to get them again and they are just as I remember. The quality is good. However, the durability, leakage, and appearance depends on the type of paper or material you write on.I have a "diary" I write in and after a day or so, the ink is so faint that I can barely see what's written. If you write it on skin.. it lasts a while and yes, it's completely invisable and washable. I love it, I just wish it worked better in my diary. Perhaps a different paper material would work better.

Good price and a lot of fun. Comes with instructions on how to use the invisible ink pens. Nice variety of colors and a good price. Fun for kids of any age! Great party favor.

Good pens

writes very light. u gotta have the black light pretty close to see.

We have a 6 year old "Director of Office Shenanigans" and have a lot of fun writing secret messages with these. The light on the pen isn't super bright but enough to see the writing.