For years, the go-to-guys for "invisible ink" were Lee Publications. From their origins in the 1970s, those books were a perfect treat for the kids in the back of long car trips. Lee Publications finally got their hands on a Marvel licensing deal in 2003, and they produced a score of Marvel Color/Activity (Lee Publications) products in the following years.
Bendon meanwhile produced their own extensive range of more traditional coloring and activity books, staying away from invisible ink until very recently.
But since Bendon decided to enter the "invisible ink" market, they have been prolific and produced a wide range across many of the properties they license from Mattel, Marvel/Disney and others. This Spider-Man book is from Bendon in 2017, and is just one of the several dozen licensed invisible ink activity books under their "Imagine Ink" brand name.
The activity pad itself is 5.5" x 6" top-bound with 24 pages. The pad is on a larger cardboard backing which takes the overall product size to 6.3" x 8".
The pen is in a plastic pocket, and can be accessed by tearing open a perforated access port in the cardboard backing. That should (in theory, I haven't tried it) allow the pen to be stored back with the pad when not in use.
The pages are a mix of mazes, puzzles, games, and reveal-the-picture. All pages are designed to be used with the revealing pen.
The printed lines on the page are black and white, but according to the front cover, using the pen will...
Reveal a RAINBOW of COLORS!
We'll have to take their word for that.
The product is bright and attractive. The count of 24 pages seems fair and reasonable for a specialist "high technology" product like this one. It's invisible ink! In COLOR!
I must confess a deep fondness for these types of products, and this one is a well-presented, attractive and state-of-the-art example of the genre.
There is also an "Avengers Assemble" product in the range, but Spider-Man doesn't appear in it so it's not in our database.