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

We got them as party favors for a pirate birthday party, the kids had to use them to find secret messages on the map. It was a big hit. All pens worked and the kids could even write a lot with them without running out of the secret ink suggesting some durability. Good value for the price, my son got a single piece on a bookfair for 4USD.

I purchased these as a gift to my students for Christmas and it was a big hit! They are fun and help promote writing in a fun way for my Kindergartners.

Huge hit for birthday gift bags! Good quality and fun for kids

These invisible ink markers are excellent for blacklight use. The ink is bright and highly visible under UV light, and the markers seem to have a good lifespan. I used them to create a hidden clue in a treasure map, and they worked perfectly for that purpose. My only disappointment was that, despite appearing to be different colors on the barrel, all the markers write in the same invisible ink color. If you need multiple colors, these won't provide that. One of the lights was dead.

These are SO fun, the grandkids just love them.

My 7 yr old grandson loved these pens. So fun

Did they what it says and lasts a long times. Kids loved them

I love this item as long as you have a black light it’s great. You will most definitely become a secret agent!

Bought them with some uv light (they do have small one) and gave it to kids for a birthday party. They had a blast in the dark. Still haven't run out of ink. All in all a good gift for kids to right secret messages hhh

Bought these for my daughters 5th birthday party goodie bag favour. They are super cool, and really work! We have found that they are less effective on coloured/construction paper, but overall a fun product. Seems to be decent quality so far - it's only been about a month, without a lot of use. Appears quite "magic" though, so it's fun for sure - sending secret notes, etc.

These Eodvics pens are a fascinating toy for the children in my Grade One class. They love to write their names or draw little pictures that fade away only to bring them back later with the tiny lights built into the pens. The colours of the pens are cute and they are well-made and sturdy enough to withstand being handled by the kids. Kids should find them fun and entertaining to write and draw with.

They work as advertised. Made a great gift for my nephew. He loves them!

The description said 18 pens and books, but the box had only 16