This mini freebie book is 4.75" x 6". It's available only in the UK (as evinced by the spelling of "Colouring" on the cover), and only as part of the boxed activity pack. There's no separate ISBN for this item.
This is a small sixteen page book, featuring basically the same artwork as featured in the rest of the Spider-Man Color/Activity Books (HarperCollins) titles, simply scaled down to fit. That would make for some pretty fiddly coloring-in with the middle-sized crayons offered!
It's small, it's thin and fiddly. It's printed on high-quality clean white paper stock, and the content is fine, but it's just so darned miserly in size and number of pages.
A stingy two web rating from me for this lightweight offering.