The "pages" of the book are comprised of a plastic material, which looks real from afar and will surely last longer than actual pages in a book would last.
With the advent of ebooks, my personal book shelves have been purged to practically nothing. However, other dictionaries and, "How to," books are still present. It's the perfect disguise.
Open up the cover and you'll see a numbers lock with a steel door. Our only issue is that we do not know how to operate such a lock. But, the Internet will help here.
Vital Link: Amazon